RadioGroup有两个有10个RadioButton的列
我有一个RadioGroup ，我想alignmentbutton在两列和五行，我无法实现它。 我已经尝试过的事情：
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RelativeLayout– >RadioGroup外部 – >RadioGroup内部。 所有RadioButtons被选中，但我只想要select一个。 -
RadioGroup：方向 - 跨度，stretchcolumns
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TableRow -
TableLayout
请让我知道如何创build一个RadioGroup并有两列和许多RadioButtons内。
您可以模拟RadioGroup ，使其看起来像只有一个。 例如，您有rg1和rg2 （ RadioGroups的方向设置为vertical （两列））。 要设置这些RadioGroups ：
rg1 = (RadioGroup) findViewById(R.id.radioGroup1); rg2 = (RadioGroup) findViewById(R.id.radioGroup2); rg1.clearCheck(); // this is so we can start fresh, with no selection on both RadioGroups rg2.clearCheck(); rg1.setOnCheckedChangeListener(listener1); rg2.setOnCheckedChangeListener(listener2);
要在这些RadioGroups只select一个RadioButton ，上面的监听器将是：
private OnCheckedChangeListener listener1 = new OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { if (checkedId != -1) { rg2.setOnCheckedChangeListener(null); // remove the listener before clearing so we don't throw that stackoverflow exception(like Vladimir Volodin pointed out) rg2.clearCheck(); // clear the second RadioGroup! rg2.setOnCheckedChangeListener(listener2); //reset the listener Log.e("XXX2", "do the work"); } } }; private OnCheckedChangeListener listener2 = new OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { if (checkedId != -1) { rg1.setOnCheckedChangeListener(null); rg1.clearCheck(); rg1.setOnCheckedChangeListener(listener1); Log.e("XXX2", "do the work"); } } };
要从RadioGroups获取选中的RadioButton ，你可以这样做：
int chkId1 = rg1.getCheckedRadioButtonId(); int chkId2 = rg2.getCheckedRadioButtonId(); int realCheck = chkId1 == -1 ? chkId2 : chkId1;
如果您使用RadioGroup的check()方法，则必须记得调用另一个Radiogroup上的clearCheck() 。
RadioGroup是从LinearLayout扩展而来的。
线性布局不能这样做，所以RadioGroup无法做到这一点。
为什么不实施它自己。
使用RelativeLayout来布局子视图。 并logging子视图的状态。 使用setLevel来控制状态。
祝你好运！。
使用LinearLayout在xml文件中创build2个RadioGroup，每个RadioGroup有5个RadioButton并使用layout_weight属性将它们并排放置在屏幕上。 然后为这些广播组创build监听器，如下所示：
rg1 = (RadioGroup) findViewById(R.id.radiogroup1); rg2 = (RadioGroup) findViewById(R.id.radiogroup2); rg1.clearCheck();//this is so we can start fresh, with no selection on both RadioGroups rg2.clearCheck(); rg1.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { // TODO Auto-generated method stub if (checkedId != -1) { fun2(); } } }); rg2.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { // TODO Auto-generated method stub if (checkedId != -1) { fun1(); } } });
和fun1（）和fun2（）将被定义如下所示：
public void fun1() { rg1.setOnCheckedChangeListener(null); rg1.clearCheck(); rg1.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { fun2(); Log.v("Inside fun1","fun2"); } }); } public void fun2() { rg2.setOnCheckedChangeListener(null); rg2.clearCheck(); rg2.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { // TODO Auto-generated method stub fun1(); Log.v("Inside fun2","fun1"); } }); }
我不得不做同样的事情，结合了TableLayout和RadioButtonGroup。 我将这些单选buttondynamic添加到TableRows中。 这是class级：
public class RadioGroupColumns extends TableLayout implements OnClickListener { private static final String TAG = "RadioGroupColumns"; private RadioButton activeRadioButton; private int mCheckedId = -1; // tracks children radio buttons checked state private CompoundButton.OnCheckedChangeListener mChildOnCheckedChangeListener; // when true, mOnCheckedChangeListener discards events private boolean mProtectFromCheckedChange = false; private OnCheckedChangeListener mOnCheckedChangeListener; private PassThroughHierarchyChangeListener mPassThroughListener; public RadioGroupColumns(Context context) { super(context); setOrientation(VERTICAL); init(); } public RadioGroupColumns(Context context, AttributeSet attrs) { super(context, attrs); Resources res = Resources.getSystem(); int value = 0; // retrieve selected radio button as requested by the user in the // XML layout file TypedArray attributes = null; try { attributes = context.obtainStyledAttributes(attrs, getAttributes(context), R.attr.radioButtonStyle, 0); value = attributes.getResourceId(getAttribute(context), View.NO_ID); } catch (IllegalAccessException e) { // TODO Auto-generated catch block Log.d("Exception RadioGroupColumns Construct",e.toString()); e.printStackTrace(); } catch (ClassNotFoundException e) { Log.d("Exception RadioGroupColumns Construct",e.toString()); e.printStackTrace(); } if (value != View.NO_ID) { mCheckedId = value; } //hardcode it to vertical //final int index = attributes.getInt(com.android.internal.R.styleable.RadioGroup_orientation, VERTICAL); //setOrientation(index); attributes.recycle(); setOrientation(VERTICAL); init(); } @Override public void onClick(View v) { if (v instanceof TableRow) { TableRow row = (TableRow)v; for (int j=0;j<row.getChildCount();j++) { if (RadioButton.class.isAssignableFrom(row.getChildAt(j).getClass())) { ((RadioButton) row.getChildAt(j)).setChecked(true); activeRadioButton = (RadioButton) row.getChildAt(j); } } } else { final RadioButton rb = (RadioButton) v; if (activeRadioButton != null) { activeRadioButton.setChecked(false); } rb.setChecked(true); activeRadioButton = rb; } } private void init() { mChildOnCheckedChangeListener = new CheckedStateTracker(); mPassThroughListener = new PassThroughHierarchyChangeListener(); super.setOnHierarchyChangeListener(mPassThroughListener); } private int getAttribute(Context con) throws ClassNotFoundException, IllegalArgumentException, IllegalAccessException { //use reflect to get styleable class. Field[] alFields = null; ArrayList<Integer> alInts = new ArrayList<Integer>(); int R_ID = 0; for (Class c : android.R.class.getClasses()) { if (c.getName().indexOf("styleable") >= 0) { alFields = Class.forName( con.getPackageName() + ".R$styleable" ).getFields(); } } for (Field f : alFields) { Log.d("field name",f.getName()); if (f.getName().equals("RadioGroup_checkedButton")) { int[] ret = (int[])f.get(null); R_ID = ret[0]; } } return R_ID; } //gets all RadioGroup R,android.internal.styleable.RadioGroup values private int[] getAttributes(Context con) throws IllegalAccessException, ClassNotFoundException { //use reflect to get styleable class. Field[] alFields = null; ArrayList<Integer> alInts = new ArrayList<Integer>(); int[] ints = null; int count = 0; try { for (Class c : android.R.class.getClasses()) { if (c.getName().indexOf("styleable") >= 0) { Log.d("get Class Name Outer", c.getName()); //use reflection to access the resource class alFields = Class.forName( con.getPackageName() + ".R$styleable" ).getFields(); } } if (alFields != null) { Log.d("field numbers size", String.valueOf(alFields.length)); for (Field field : alFields) { Class<?> targetType = field.getType(); Log.d("field type", field.getType().toString()); if (targetType.equals(Integer.TYPE) && targetType.isPrimitive()) { //alInts.add((Integer)field); Object objectValue = (Integer)field.getInt(null); //Object objectValue = (Integer)targetType.newInstance(); alInts.add((Integer)objectValue); count++; } ints = new int[count]; for (int i=0;i<alInts.size();i++) { ints[i] = alInts.get(i); } } } } catch (IllegalAccessException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ClassNotFoundException e) { e.printStackTrace(); } return ints; } public void check(int id) { // don't even bother if (id != -1 && (id == mCheckedId)) { return; } if (mCheckedId != -1) { setCheckedStateForView(mCheckedId, false); } if (id != -1) { setCheckedStateForView(id, true); } activeRadioButton = (RadioButton) findViewById(id); activeRadioButton.setChecked(true); setCheckedId(id); } public void setOnCheckedChangeListener(RadioGroupColumns.OnCheckedChangeListener onCheckedChangeListener) { mOnCheckedChangeListener = (OnCheckedChangeListener) onCheckedChangeListener; } private void setCheckedId(int id) { mCheckedId = id; if (mOnCheckedChangeListener != null) { mOnCheckedChangeListener.onCheckedChanged(this, mCheckedId); } } private void setCheckedStateForView(int viewId, boolean checked) { View checkedView = findViewById(viewId); if (!RadioButton.class.isAssignableFrom(checkedView.getClass()) && checkedView != null) { TableRow row = (TableRow) checkedView; for (int j=0;j<row.getChildCount();j++) { RadioButton button = (RadioButton) row.getChildAt(j); if (button.isChecked() && button != null) { button.setChecked(checked); } } } if (checkedView != null && checkedView instanceof RadioButton) { ((RadioButton) checkedView).setChecked(checked); } } /* * (non-Javadoc) * * @see android.widget.TableLayout#addView(android.view.View, int, * android.view.ViewGroup.LayoutParams) */ @Override public void addView(View child, int index, android.view.ViewGroup.LayoutParams params) { super.addView(child, index, params); setChildrenOnClickListener((TableRow) child); } /* * (non-Javadoc) * * @see android.widget.TableLayout#addView(android.view.View, * android.view.ViewGroup.LayoutParams) */ @Override public void addView(View child, android.view.ViewGroup.LayoutParams params) { super.addView(child, params); setChildrenOnClickListener((TableRow) child); } private void setChildrenOnClickListener(TableRow tr) { final int c = tr.getChildCount(); for (int i = 0; i < c; i++) { final View v = tr.getChildAt(i); if (v instanceof RadioButton) { v.setOnClickListener(this); } } } public int getCheckedRadioButtonId() { if (activeRadioButton != null) { return activeRadioButton.getId(); } return -1; } public interface OnCheckedChangeListener { public void onCheckedChanged(RadioGroupColumns group, int checkedId); } private class CheckedStateTracker implements CompoundButton.OnCheckedChangeListener { public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { // prevents from infinite recursion if (mProtectFromCheckedChange) { return; } mProtectFromCheckedChange = true; if (mCheckedId != -1) { setCheckedStateForView(mCheckedId, false); } mProtectFromCheckedChange = false; int id = buttonView.getId(); setCheckedId(id); } } private class PassThroughHierarchyChangeListener implements android.view.ViewGroup.OnHierarchyChangeListener { private android.view.ViewGroup.OnHierarchyChangeListener mOnHierarchyChangeListener; /** * {@inheritDoc} */ @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1) public void onChildViewAdded(View parent, View child) { if (parent == RadioGroupColumns.this && child instanceof RadioButton) { int id = child.getId(); // generates an id if it's missing if (id == View.NO_ID) { id = View.generateViewId(); child.setId(id); } ((RadioButton) child).setOnCheckedChangeListener((com.assistek.ediary.RadioButton.OnCheckedChangeListener) mChildOnCheckedChangeListener); } if (mOnHierarchyChangeListener != null) { mOnHierarchyChangeListener.onChildViewAdded(parent, child); } } /** * {@inheritDoc} */ public void onChildViewRemoved(View parent, View child) { if (parent == RadioGroupColumns.this && child instanceof RadioButton) { ((RadioButton) child).setOnCheckedChangeListener(null); } if (mOnHierarchyChangeListener != null) { mOnHierarchyChangeListener.onChildViewRemoved(parent, child); } } } }
这是将单选button添加到扩展的radiogroup的代码：
private void setupRadioButtonAnswers() { ArrayList<HolderAnswer> listAnswers = GlobalVars.questionHolders[GlobalVars.arrayRowNumber] .getListAnswers(); ArrayList<ArrayList<HolderAnswer>> listAnswersSorted = new ArrayList<ArrayList<HolderAnswer>>(); ArrayList<TableRow> alTableRows = new ArrayList<TableRow>(); int NumberInColumns = (int) Math.floor(listAnswers.size() / NUMBER_OF_COLUMNS); // make higher number of answers on the right if (listAnswers.size() % NUMBER_OF_COLUMNS > 0) NumberInColumns++; for (int i = 0; i < NumberInColumns; i++) { TableRow row = new TableRow(this); TableRow.LayoutParams lp = new TableRow.LayoutParams( TableRow.LayoutParams.WRAP_CONTENT); row.setLayoutParams(lp); alTableRows.add(row); } int count = 0; // sort by row /* * a[0] = "Question 1" a[1] = "Question 2" a[2] = "Question 3" a[3] = "Question 4" a[4] = "Question 5" a[5] = "Question 6" a[6] = "Question 7" sorted to: a[0] = "Question 1" a[1] = "Question 5" a[2] = "Question 2" a[3] = "Question 6" a[4] = "Question 3" a[5] = "Question 7" a[6] = "Question 4" */ // initialize the ArrayLists in listAnswersSorted int numRows = listAnswers.size() / NUMBER_OF_COLUMNS + 1; for (int i = 0; i < numRows; i += 1) { listAnswersSorted.add(new ArrayList<HolderAnswer>()); } // calculate column index where the "step" happens int step = listAnswers.size() % NUMBER_OF_COLUMNS; // loop through and add elements to listAnswersSorted int index = 0; int row = 0; int col = 0; while (index < listAnswers.size()) { listAnswersSorted.get(row).add(listAnswers.get(index)); int rows = col < step ? numRows : numRows - 1; row += 1; if (row == rows) { row = 0; col += 1; } index += 1; } row = 0; int columncount = 1; for (ArrayList<HolderAnswer> sortedArrayList : listAnswersSorted) { for (HolderAnswer answer : sortedArrayList) { final RadioButton button = new RadioButton(this); button.setTag(answer.getRecID()); button.setId(GlobalVars.getLatestId()); button.setTextColor(Color.BLACK); GlobalVars.setupText(con, button, answer.getTextID()); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { button.setEnabled(false); handlerReenableView.sendEmptyMessageDelayed(button.getId(), 1000); button.setChecked(true); radioGroup.check(button.getId()); } }); button.setLayoutParams(new TableRow.LayoutParams(columncount)); alTableRows.get(row).addView(button); if (columncount==NUMBER_OF_COLUMNS) { columncount = 1; radioGroup.addView(alTableRows.get(row)); alTableRows.get(row).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { for(int k=0;k<((TableRow) v).getChildCount();k++) { TableRow row = (TableRow) v; for (int l=0;l<row.getChildCount();l++) { RadioButton tableButton = (RadioButton) row.getChildAt(l); if (tableButton.isChecked) { radioGroup.check(tableButton.getId()); } } } } }); } else { columncount++; } //if (row=NumberInColumns) count++; } if (count == listAnswers.size()) { radioGroup.addView(alTableRows.get(row)); } row++; } radioGroup.setOnCheckedChangeListener(new RadioGroupColumns.OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroupColumns group, int checkedId) { Log.d("We're here",String.valueOf(checkedId)); if (checkedId == -1) { for (int i = 0; i < radioGroup.getChildCount(); i++) { TableRow row = (TableRow)radioGroup.getChildAt(i); for (int j=0;j<row.getChildCount();j++) { if (RadioButton.class.isAssignableFrom(row.getChildAt(j).getClass())) { ((RadioButton) row.getChildAt(j)).setChecked(false); } } } } else { for (int i = 0; i < radioGroup.getChildCount(); i++) { TableRow row = (TableRow)radioGroup.getChildAt(i); for (int j=0;j<row.getChildCount();j++) { if (RadioButton.class.isAssignableFrom(row.getChildAt(j).getClass()) && row.getChildAt(j).getId() != -1) { ((RadioButton) row.getChildAt(j)).setChecked(false); } } } RadioButton checkedRadioButton = (RadioButton) radioGroup.findViewById(checkedId); checkedRadioButton.setChecked(true); Log.d("checkedID onchecked Change()", String.valueOf(radioGroup.getCheckedRadioButtonId())); } } }); }
如果布局不复杂，最好的办法是使用Single RelativeLayout而不是多个Linear Layouts。
以下是2行的代码。 第一行有3列。 第二排一列。
<RadioGroup android:id="@+id/radio_group" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginBottom="4dp" android:layout_marginTop="4dp" android:orientation="vertical"> <RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content"> <android.support.v7.widget.AppCompatRadioButton android:id="@+id/r1c1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:layout_alignParentTop="true" android:layout_marginRight="8dp" android:gravity="center" android:text="Row 1 Column1" /> <android.support.v7.widget.AppCompatRadioButton android:id="@+id/r2c1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/r1c1" android:layout_gravity="left|center_vertical" android:layout_marginRight="8dp" android:layout_weight="1" android:gravity="left|center_vertical" android:text="Row 2 Column 1" /> <android.support.v7.widget.AppCompatRadioButton android:id="@+id/r1c2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginRight="8dp" android:layout_toRightOf="@id/r1c1" android:gravity="center" android:text="Row 1 Column 2"/> <android.support.v7.widget.AppCompatRadioButton android:id="@+id/r1c3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginRight="8dp" android:layout_toRightOf="@id/r1c2" android:gravity="center" android:text="Row 1 Column 3" /> </RelativeLayout> </RadioGroup>
更新：我更新了代码，因为我把它发布在这里。 更新的是在这个链接： https : //github.com/Gavras/MultiLineRadioGroup/blob/master/app/src/main/java/com/whygraphics/multilineradiogroup/MultiLineRadioGroup.java
当我需要多线路广播组时，我做了一些非常小的事情
这是扩展RadioGroup的自定义视图。
你有能力select连续的最大button。 它基于TableLayout，所以它也alignmentbutton。 一切都logging在案。
/** * Layout that arranges radio buttons in multiple lines. * Only one radio button can be checked at the same time. * <p> * XML Attributes: * <p> * max_in_row: * A non-negative number that represents the maximum radio buttons in a row, * 0 for all in one line. * <p> * radio_buttons: * String-array resource reference that represents the texts of the desired radio buttons. * <p> * default_button: * String that represents the text or the index of the radio button to be checked by default. * The string should be in the following format: * for text: "text:[text-of-button]" where text-of-button is the text of the button to check. * for index: "index:[index-of-button]" where index-of-button is the index of the button to check. * when the prefix omitted, "text:" inserted implicitly. */ public class MultiLineRadioGroup extends RadioGroup { private static final String XML_DEFAULT_BUTTON_PREFIX_INDEX = "index:"; private static final String XML_DEFAULT_BUTTON_PREFIX_TEXT = "text:"; private static final int DEF_VAL_MAX_IN_ROW = 0; private OnCheckedChangeListener mOnCheckedChangeListener; private int mMaxInRow; // all buttons are stored in table layout private TableLayout mTableLayout; // list to store all the buttons private List<RadioButton> mRadioButtons; // the checked button private RadioButton checkedButton; /** * Creates a new MultiLineRadioGroup for the given context. * * @param context the application environment */ public MultiLineRadioGroup(Context context) { super(context); init(null); } /** * Creates a new MultiLineRadioGroup for the given context * and with the specified set attributes. * * @param context the application environment * @param attrs a collection of attributes */ public MultiLineRadioGroup(Context context, AttributeSet attrs) { super(context, attrs); init(attrs); } // initializes the layout private void init(AttributeSet attrs) { mRadioButtons = new ArrayList<>(); mTableLayout = getTableLayout(); addView(mTableLayout); if (attrs != null) initAttrs(attrs); } // initializes the layout with the specified attributes private void initAttrs(AttributeSet attrs) { TypedArray typedArray = getContext().getTheme().obtainStyledAttributes( attrs, R.styleable.multi_line_radio_group, 0, 0); try { // gets and sets the max in row. setMaxInRow(typedArray.getInt(R.styleable.multi_line_radio_group_max_in_row, DEF_VAL_MAX_IN_ROW)); // gets and adds the starting buttons CharSequence[] radioButtonStrings = typedArray.getTextArray( R.styleable.multi_line_radio_group_radio_buttons); addButtons(radioButtonStrings); // gets the default button and checks it if presents. String string = typedArray.getString(R.styleable.multi_line_radio_group_default_button); if (string != null) setDefaultButton(string); } finally { typedArray.recycle(); } } // checks the default button based on the passed string private void setDefaultButton(String string) { final int START_OF_INDEX = 6; final int START_OF_TEXT = 5; // the text of the button to check String buttonToCheck; if (string.startsWith(XML_DEFAULT_BUTTON_PREFIX_INDEX)) { String indexString = string.substring(START_OF_INDEX, string.length()); int index = Integer.parseInt(indexString); if (index < 0 || index >= mRadioButtons.size()) throw new IllegalArgumentException("index must be between 0 to getRadioButtonCount() - 1 [" + (getRadioButtonCount() - 1) + "]"); buttonToCheck = mRadioButtons.get(index).getText().toString(); } else if (string.startsWith(XML_DEFAULT_BUTTON_PREFIX_TEXT)) { buttonToCheck = string.substring(START_OF_TEXT, string.length()); } else { // when there is no prefix assumes the string is the text of the button buttonToCheck = string; } check(buttonToCheck); } /** * Returns the table layout to set to this layout. * * @return the table layout */ protected TableLayout getTableLayout() { return (TableLayout) LayoutInflater.from(getContext()) .inflate(R.layout.table_layout, this, false); } /** * Returns the table row to set in this layout. * * @return the table row */ protected TableRow getTableRow() { return (TableRow) LayoutInflater.from(getContext()) .inflate(R.layout.table_row, mTableLayout, false); } /** * Returns the radio button to set in this layout. * * @return the radio button */ protected RadioButton getRadioButton() { return (RadioButton) LayoutInflater.from(getContext()) .inflate(R.layout.radio_button, null); } /** * Register a callback to be invoked when a radio button is checked. * * @param onCheckedChangeListener the listener to attach */ public void setOnCheckedChangeListener(OnCheckedChangeListener onCheckedChangeListener) { this.mOnCheckedChangeListener = onCheckedChangeListener; } /** * Sets the maximum radio buttons in a row, 0 for all in one line * and arranges the layout accordingly. * * @param maxInRow the maximum radio buttons in a row * @throws IllegalArgumentException if maxInRow is negative */ public void setMaxInRow(int maxInRow) { if (maxInRow < 0) throw new IllegalArgumentException("maxInRow must not be negative"); this.mMaxInRow = maxInRow; arrangeButtons(); } /** * Adds a view to the layout * <p> * Consider using addButtons() instead * * @param child the view to add */ @Override public void addView(View child) { addView(child, -1, child.getLayoutParams()); } /** * Adds a view to the layout in the specified index * <p> * Consider using addButtons() instead * * @param child the view to add * @param index the index in which to insert the view */ @Override public void addView(View child, int index) { addView(child, index, child.getLayoutParams()); } /** * Adds a view to the layout with the specified width and height. * Note that for radio buttons the width and the height are ignored. * <p> * Consider using addButtons() instead * * @param child the view to add * @param width the width of the view * @param height the height of the view */ @Override public void addView(View child, int width, int height) { addView(child, -1, new LinearLayout.LayoutParams(width, height)); } /** * Adds a view to the layout with the specified layout params. * Note that for radio buttons the params are ignored. * <p> * Consider using addButtons() instead * * @param child the view to add * @param params the layout params of the view */ @Override public void addView(View child, ViewGroup.LayoutParams params) { addView(child, -1, params); } /** * Adds a view to the layout in the specified index * with the specified layout params. * Note that for radio buttons the params are ignored. * <p> * * Consider using addButtons() instead * * @param child the view to add * @param index the index in which to insert the view * @param params the layout params of the view */ @Override public void addView(View child, int index, ViewGroup.LayoutParams params) { if (params == null) { params = new ViewGroup.LayoutParams( ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); } if (child instanceof RadioButton) addButtons(index, ((RadioButton) child).getText()); else super.addView(child, index, params); } /** * Adds radio buttons to the layout based on the texts in the radioButtons array. * Adds them in the last index. * If radioButtons is null does nothing. * * @param radioButtons the texts of the buttons to add */ public void addButtons(CharSequence... radioButtons) { addButtons(-1, radioButtons); } /** * Adds radio buttons to the layout based on the texts in the radioButtons array. * Adds them in the specified index, -1 for the last index. * If radioButtons is null does nothing. * * @param index the index in which to insert the radio buttons * @param radioButtons the texts of the buttons to add * @throws IllegalArgumentException if index is less than -1 or greater than the number of radio buttons */ public void addButtons(int index, CharSequence... radioButtons) { if (index < -1 || index > mRadioButtons.size()) throw new IllegalArgumentException("index must be between -1 to getRadioButtonCount() [" + getRadioButtonCount() + "]"); if (radioButtons == null) return; int realIndex = (index != -1) ? index : mRadioButtons.size(); // adds the buttons to the list for (CharSequence text : radioButtons) mRadioButtons.add(realIndex++, createRadioButton(text)); arrangeButtons(); } // creates a radio button with the specified text private RadioButton createRadioButton(CharSequence text) { RadioButton radioButton = getRadioButton(); radioButton.setText(text); radioButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { checkButton((RadioButton) v); if (mOnCheckedChangeListener != null) mOnCheckedChangeListener.onCheckedChanged(MultiLineRadioGroup.this, checkedButton); } }); return radioButton; } /** * Removes a view from the layout. * <p> * Consider using removeButton(). * * @param view the view to remove */ @Override public void removeView(View view) { super.removeView(view); } /** * Removes a view from the layout in the specified index. * <p> * Consider using removeButton(). * * @param index the index from which to remove the view */ @Override public void removeViewAt(int index) { super.removeViewAt(index); } /** * Removes the specified range of views from the layout. * <p> * Consider using removeButtons(). * * @param start the start index to remove * @param count the number of views to remove */ @Override public void removeViews(int start, int count) { super.removeViews(start, count); } /** * Removes all the views from the layout. * <p> * Consider using removeAllButtons(). */ @Override public void removeAllViews() { super.removeAllViews(); } /** * Removes a radio button from the layout. * If the radio button is null does nothing. * * @param radioButton the radio button to remove */ public void removeButton(RadioButton radioButton) { if (radioButton == null) return; removeButton(radioButton.getText()); } /** * Removes a radio button from the layout based on its text. * Removes the first occurrence. * If the text is null does nothing. * * @param text the text of the radio button to remove */ public void removeButton(CharSequence text) { if (text == null) return; int index = -1; for (int i = 0, len = mRadioButtons.size(); i < len; i++) { // checks if the texts are equal if (mRadioButtons.get(i).getText().equals(text)) { index = i; break; } } // removes just if the index was found if (index != -1) removeButton(index); } /** * Removes the radio button in the specified index from the layout. * * @param index the index from which to remove the radio button * @throws IllegalArgumentException if index is less than 0 * or greater than the number of radio buttons - 1 */ public void removeButton(int index) { removeButtons(index, 1); } /** * Removes all the radio buttons in the specified range from the layout. * Count can be any non-negative number. * * @param start the start index to remove * @param count the number of radio buttons to remove * @throws IllegalArgumentException if index is less than 0 * or greater than the number of radio buttons - 1 * or count is negative */ public void removeButtons(int start, int count) { if (start < 0 || start >= mRadioButtons.size()) throw new IllegalArgumentException("remove index must be between 0 to getRadioButtonCount() - 1 [" + (getRadioButtonCount() - 1) + "]"); if (count < 0) throw new IllegalArgumentException("count must not be negative"); if (count == 0) return; int endIndex = start + count - 1; // if endIndex is not in the range of the radio buttons sets it to the last index if (endIndex >= mRadioButtons.size()) endIndex = mRadioButtons.size() - 1; // iterates over the buttons to remove for (int i = endIndex; i >= start; i--) { RadioButton radiobutton = mRadioButtons.get(i); // if the button to remove is the checked button set checkedButton to null if (radiobutton == checkedButton) checkedButton = null; // removes the button from the list mRadioButtons.remove(i); } arrangeButtons(); } /** * Removes all the radio buttons from the layout. */ public void removeAllButtons() { removeButtons(0, mRadioButtons.size()); } // arrange the button in the layout private void arrangeButtons() { // iterates over each button and puts it in the right place for (int i = 0, len = mRadioButtons.size(); i < len; i++) { RadioButton radioButtonToPlace = mRadioButtons.get(i); int rowToInsert = (mMaxInRow != 0) ? i / mMaxInRow : 0; int columnToInsert = (mMaxInRow != 0) ? i % mMaxInRow : i; // gets the row to insert. if there is no row create one TableRow tableRowToInsert = (mTableLayout.getChildCount() <= rowToInsert) ? addTableRow() : (TableRow) mTableLayout.getChildAt(rowToInsert); int tableRowChildCount = tableRowToInsert.getChildCount(); // if there is already a button in the position if (tableRowChildCount > columnToInsert) { RadioButton currentButton = (RadioButton) tableRowToInsert.getChildAt(columnToInsert); // insert the button just if the current button is different if (currentButton != radioButtonToPlace) { // removes the current button removeButtonFromParent(currentButton, tableRowToInsert); // removes the button to place from its current position removeButtonFromParent(radioButtonToPlace, (ViewGroup) radioButtonToPlace.getParent()); // adds the button to the right place tableRowToInsert.addView(radioButtonToPlace, columnToInsert); } // if there isn't already a button in the position } else { // removes the button to place from its current position removeButtonFromParent(radioButtonToPlace, (ViewGroup) radioButtonToPlace.getParent()); // adds the button to the right place tableRowToInsert.addView(radioButtonToPlace, columnToInsert); } } removeRedundancies(); } // removes the redundant rows and radio buttons private void removeRedundancies() { // the number of rows to fit the buttons int rows; if (mRadioButtons.size() == 0) rows = 0; else if (mMaxInRow == 0) rows = 1; else rows = (mRadioButtons.size() - 1) / mMaxInRow + 1; int tableChildCount = mTableLayout.getChildCount(); // if there are redundant rows remove them if (tableChildCount > rows) mTableLayout.removeViews(rows, tableChildCount - rows); tableChildCount = mTableLayout.getChildCount(); int maxInRow = (mMaxInRow != 0) ? mMaxInRow : mRadioButtons.size(); // iterates over the rows for (int i = 0; i < tableChildCount; i++) { TableRow tableRow = (TableRow) mTableLayout.getChildAt(i); int tableRowChildCount = tableRow.getChildCount(); int startIndexToRemove; int count; // if it is the last row removes all redundancies after the last button in the list if (i == tableChildCount - 1) { startIndexToRemove = (mRadioButtons.size() - 1) % maxInRow + 1; count = tableRowChildCount - startIndexToRemove; // if it is not the last row removes all the buttons after maxInRow position } else { startIndexToRemove = maxInRow; count = tableRowChildCount - maxInRow; } if (count > 0) tableRow.removeViews(startIndexToRemove, count); } } // adds and returns a table row private TableRow addTableRow() { TableRow tableRow = getTableRow(); mTableLayout.addView(tableRow); return tableRow; } // removes a radio button from a parent private void removeButtonFromParent(RadioButton radioButton, ViewGroup parent) { if (radioButton == null || parent == null) return; parent.removeView(radioButton); } /** * Returns the number of radio buttons. * * @return the number of radio buttons */ public int getRadioButtonCount() { return mRadioButtons.size(); } /** * Returns the radio button in the specified index. * If the index is out of range returns null. * * @param index the index of the radio button * @return the radio button */ public RadioButton getRadioButtonAt(int index) { if (index < 0 || index >= mRadioButtons.size()) return null; return mRadioButtons.get(index); } /** * Checks the radio button with the specified id. * If the specified id is not found does nothing. * * @param id the radio button's id */ @Override public void check(int id) { if (id <= 0) return; for (RadioButton radioButton : mRadioButtons) { if (radioButton.getId() == id) { checkButton(radioButton); return; } } } /** * Checks the radio button with the specified text. * If there is more than one radio button associated with this text * checks the first radio button. * If the specified text is not found does nothing. * * @param text the radio button's text */ public void check(CharSequence text) { if (text == null) return; for (RadioButton radioButton : mRadioButtons) { if (radioButton.getText().equals(text)) { checkButton(radioButton); return; } } } /** * Checks the radio button at the specified index. * If the specified index is invalid does nothing. * * @param index the radio button's index */ public void checkAt(int index) { if (index < 0 || index >= mRadioButtons.size()) return; checkButton(mRadioButtons.get(index)); } // checks and switches the button with the checkedButton private void checkButton(RadioButton button) { if (button == null) return; // if the button to check is different from the current checked button if (button != checkedButton) { // if exists sets checkedButton to null if (checkedButton != null) checkedButton.setChecked(false); button.setChecked(true); checkedButton = button; } } /** * Clears the checked radio button */ @Override public void clearCheck() { checkedButton.setChecked(false); checkedButton = null; } /** * Returns the checked radio button's id. * If no radio buttons are checked returns -1. * * @return the checked radio button's id */ @Override public int getCheckedRadioButtonId() { if (checkedButton == null) return -1; return checkedButton.getId(); } /** * Returns the checked radio button's index. * If no radio buttons are checked returns -1. * * @return the checked radio button's index */ public int getCheckedRadioButtonIndex() { if (checkedButton == null) return -1; return mRadioButtons.indexOf(checkedButton); } /** * Returns the checked radio button's text. * If no radio buttons are checked returns null. * * @return the checked radio buttons's text */ public CharSequence getCheckedRadioButtonText() { if (checkedButton == null) return null; return checkedButton.getText(); } /** * Interface definition for a callback to be invoked when a radio button is checked. */ public interface OnCheckedChangeListener { /** * Called when a radio button is checked. * * @param group the MultiLineRadioGroup that stores the radio button * @param button the radio button that was checked */ void onCheckedChanged(MultiLineRadioGroup group, RadioButton button); } }
values/attrs.xml file:
<?xml version="1.0" encoding="utf-8"?> <resources> <declare-styleable name="multi_line_radio_group"> <attr name="max_in_row" format="integer" /> <attr name="radio_buttons" format="reference" /> <attr name="default_button" format="string" /> </declare-styleable> </resources>
R.layout.table_layout:
<?xml version="1.0" encoding="utf-8"?> <TableLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/table_layout" android:layout_width="match_parent" android:layout_height="match_parent" android:stretchColumns="*" />
R.layout.table_row:
<?xml version="1.0" encoding="utf-8"?> <TableRow xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/table_row" android:layout_width="match_parent" android:layout_height="wrap_content" />
R.layout.radio_button:(you can change the text size here)
<?xml version="1.0" encoding="utf-8"?> <RadioButton xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/radio_button" android:layout_width="match_parent" android:layout_height="match_parent" android:textSize="@dimen/radio_button_text_size" />
Example using this layout from xml:
<?xml version="1.0" encoding="utf-8"?> <[package].MultiLineRadioGroup xmlns:android="http://schemas.android.com/apk/res/android" xmlns:multi_line_radio_group="http://schemas.android.com/apk/res-auto" android:id="@+id/multi_line_radio_group" android:layout_width="match_parent" android:layout_height="match_parent" multi_line_radio_group:default_button="@string/defaultText" multi_line_radio_group:max_in_row="@integer/radio_button_max_in_row" multi_line_radio_group:radio_buttons="@array/radio_buttons" />
A couple of the other answers work fine, but are more complicated than required for simpler cases. If you just want multiple RadioGroups to act as one and can handle all of the decision making at the time of the click, then you can do this:
In your layout XML, add the same click handler to all of the RadioButtons that you want combined:
android:onClick="handleCombinedClick"
Then, make your click handler look something like this:
public void handleCombinedClick(View view) { // Clear any checks from both groups: rg1.clearCheck(); rg2.clearCheck(); // Manually set the check in the newly clicked radio button: ((RadioButton) view).setChecked(true); // Perform any action desired for the new selection: switch (view.getId()) { case R.id.radio_button_1: // do something break; case R.id.radio_button_2: // do something break; ... } }
This has the added benefit of having all of your choices handled in the same spot. And if you want to extend this to 3 or more RadioGroups, then you just need to add an additional rgX.clearCheck(); line for each added group.
I'm sure your question has been answered by now, but here is another take on it. With this code you can wrap your radio buttons into any layout you want (you don't need a radio group at all in fact). Also I would suggest using linear layouts to make the columns/rows you need.
My code is based on @infografnet and @lostdev (also thanks @Neromancer for the Compound Button suggestion!)
public class AdvRadioGroup { public interface OnButtonCheckedListener { void onButtonChecked(CompoundButton button); } private final List<CompoundButton> buttons; private final View.OnClickListener onClick = new View.OnClickListener() { @Override public void onClick(View v) { setChecked((CompoundButton) v); } }; private OnButtonCheckedListener listener; private CompoundButton lastChecked; public AdvRadioGroup(View view) { buttons = new ArrayList<>(); parseView(view); } private void parseView(final View view) { if(view instanceof CompoundButton) { buttons.add((CompoundButton) view); view.setOnClickListener(onClick); } else if(view instanceof ViewGroup) { final ViewGroup group = (ViewGroup) view; for (int i = 0; i < group.getChildCount();i++) { parseView(group.getChildAt(i)); } } } public List<CompoundButton> getButtons() { return buttons; } public CompoundButton getLastChecked() { return lastChecked; } public void setChecked(int index) { setChecked(buttons.get(index)); } public void setChecked(CompoundButton button) { if(button == lastChecked) return; for (CompoundButton btn : buttons) { btn.setChecked(false); } button.setChecked(true); lastChecked = button; if(listener != null) { listener.onButtonChecked(button); } } public void setOnButtonCheckedListener(OnButtonCheckedListener listener) { this.listener = listener; } }
Usage (with included listener):
AdvRadioGroup group = new AdvRadioGroup(findViewById(R.id.YOUR_VIEW)); group.setOnButtonCheckedListener(new AdvRadioGroup.OnButtonCheckedListener() { @Override public void onButtonChecked(CompoundButton button) { // do fun stuff here! } });
Bonus: You can get the last checked button, the list of entire buttons, and you can check any button by index with this!
