java.lang.ClassCastException：android.view.ViewGroup $ LayoutParams不能转换为android.widget.Gallery $ LayoutParams
我试图在我的应用程序中添加Fancycoverflow ，它在本例中给出的静态图像正常工作。
但我做了适配器的一些变化，我尝试运行我的应用程序，它崩溃，并显示以下错误
FATAL EXCEPTION: main java.lang.ClassCastException: android.view.ViewGroup$LayoutParams cannot be cast to android.widget.Gallery$LayoutParams at android.widget.Gallery.setUpChild(Gallery.java:889) at android.widget.Gallery.makeAndAddView(Gallery.java:858) at android.widget.Gallery.layout(Gallery.java:665) at android.widget.Gallery.onLayout(Gallery.java:357) at android.view.View.layout(View.java:14118) at android.view.ViewGroup.layout(ViewGroup.java:4467) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1670) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1528) at android.widget.LinearLayout.onLayout(LinearLayout.java:1441) at android.view.View.layout(View.java:14118) at android.view.ViewGroup.layout(ViewGroup.java:4467) at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1021) at android.view.View.layout(View.java:14118) at android.view.ViewGroup.layout(ViewGroup.java:4467) at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1021) at android.view.View.layout(View.java:14118) at android.view.ViewGroup.layout(ViewGroup.java:4467) at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1021) at android.view.View.layout(View.java:14118) at android.view.ViewGroup.layout(ViewGroup.java:4467) at android.widget.FrameLayout.onLayout(FrameLayout.java:448) at android.view.View.layout(View.java:14118) at android.view.ViewGroup.layout(ViewGroup.java:4467) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1670) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1528) at android.widget.LinearLayout.onLayout(LinearLayout.java:1441) at android.view.View.layout(View.java:14118) at android.view.ViewGroup.layout(ViewGroup.java:4467) at android.widget.FrameLayout.onLayout(FrameLayout.java:448) at android.view.View.layout(View.java:14118) at android.view.ViewGroup.layout(ViewGroup.java:4467) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2183) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1947) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1139) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4872) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:776) at android.view.Choreographer.doCallbacks(Choreographer.java:579) at android.view.Choreographer.doFrame(Choreographer.java:548) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:762) at android.os.Handler.handleCallback(Handler.java:800) at android.os.Handler.dispatchMessage(Handler.java:100) at android.os.Looper.loop(Looper.java:194) at android.app.ActivityThread.main(ActivityThread.java:5371) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:525) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) at dalvik.system.NativeStart.main(Native Method)
在例子中给出
import android.app.Activity; import android.content.Context; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.view.Gravity; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; import at.technikum.mti.fancycoverflow.FancyCoverFlow; import at.technikum.mti.fancycoverflow.FancyCoverFlowAdapter; import at.technikum.mti.fancycoverflow.samples.R; public class ViewGroupExample extends Activity { // ============================================================================= // Supertype overrides // ============================================================================= @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); this.setContentView(R.layout.layout_inflate_example); FancyCoverFlow fancyCoverFlow = (FancyCoverFlow) findViewById(R.id.fancyCoverFlow); fancyCoverFlow.setAdapter(new ViewGroupExampleAdapter()); } // ============================================================================= // Private classes // ============================================================================= private static class ViewGroupExampleAdapter extends FancyCoverFlowAdapter { // ============================================================================= // Private members // ============================================================================= private int[] images = {R.drawable.image1, R.drawable.image2, R.drawable.image3, R.drawable.image4, R.drawable.image5, R.drawable.image6,}; // ============================================================================= // Supertype overrides // ============================================================================= @Override public int getCount() { return images.length; } @Override public Integer getItem(int i) { return images[i]; } @Override public long getItemId(int i) { return i; } @Override public View getCoverFlowItem(int i, View reuseableView, ViewGroup viewGroup) { CustomViewGroup customViewGroup = null; if (reuseableView != null) { customViewGroup = (CustomViewGroup) reuseableView; } else { customViewGroup = new CustomViewGroup(viewGroup.getContext()); customViewGroup.setLayoutParams(new FancyCoverFlow.LayoutParams(300, 600)); } customViewGroup.getImageView().setImageResource(this.getItem(i)); customViewGroup.getTextView().setText(String.format("Item %d", i)); return customViewGroup; } } private static class CustomViewGroup extends LinearLayout { // ============================================================================= // Child views // ============================================================================= private TextView textView; private ImageView imageView; private Button button; // ============================================================================= // Constructor // ============================================================================= private CustomViewGroup(Context context) { super(context); this.setOrientation(VERTICAL); this.textView = new TextView(context); this.imageView = new ImageView(context); this.button = new Button(context); LinearLayout.LayoutParams layoutParams = new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); this.textView.setLayoutParams(layoutParams); this.imageView.setLayoutParams(layoutParams); this.button.setLayoutParams(layoutParams); this.textView.setGravity(Gravity.CENTER); this.imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE); this.imageView.setAdjustViewBounds(true); this.button.setText("Goto GitHub"); this.button.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse("https://davidschreiber.github.com/FancyCoverFlow")); view.getContext().startActivity(i); } }); this.addView(this.textView); this.addView(this.imageView); this.addView(this.button); } // ============================================================================= // Getters // ============================================================================= private TextView getTextView() { return textView; } private ImageView getImageView() { return imageView; } } }
而我根据我的要求改变的是
MyAdapter
private static class ViewGroupExampleAdapter extends FancyCoverFlowAdapter { private LayoutInflater inflater; public Activity a; View vi; public ArrayList<HashMap<String, String>> arr; public ArrayList<HashMap<String, String>> data; public ViewGroupExampleAdapter(Activity homeActivity, ArrayList<HashMap<String, String>> myList) { arr = myList; a = homeActivity; inflater = (LayoutInflater) a.getSystemService(Context.LAYOUT_INFLATER_SERVICE); } // ============================================================================= // Private members // ============================================================================= // private int[] images = {R.drawable.ic_launcher, R.drawable.ic_launcher, R.drawable.ic_launcher, R.drawable.ic_launcher, R.drawable.ic_launcher, R.drawable.ic_launcher,}; // ============================================================================= // Supertype overrides // ============================================================================= @Override public int getCount() { return arr.size(); } @Override public Object getItem(int position) { // TODO Auto-generated method stub return position; } @Override public long getItemId(int position) { // TODO Auto-generated method stub System.out.println("position=" + position); return position; } @Override public View getCoverFlowItem(int i, View reuseableView, ViewGroup viewGroup) { View vi = reuseableView; if (vi == null) vi = inflater.inflate(R.layout.create_club_inflate, null); TextView date1 = (TextView) vi.findViewById(R.id.txtDate1); TextView date = (TextView) vi.findViewById(R.id.txtDate); TextView team1_name = (TextView) vi.findViewById(R.id.txtTeamName); TextView team2_name = (TextView) vi.findViewById(R.id.txtVanue); TextView ground = (TextView) vi.findViewById(R.id.txt_time); HashMap<String, String> product = new HashMap<String, String>(); product = arr.get(i); System.out.println("name 1= " + product.get("str_team1_name") + " team 2=" + product.get("str_team2_obj_name")); date1.setText(product.get("str_srs")); date.setText(product.get("str_startdt")); team1_name.setText(product.get("str_team1_name")); team1_name.setAlpha(5000); team2_name.setText(product.get("str_team2_obj_name")); team2_name.setAlpha(5000); // Typeface font = Typeface.createFromAsset(getAssets(), "TitilliumText22L006.otf"); int[] color = { Color.rgb(100, 100, 100), Color.rgb(255, 255, 255) }; float[] color_position = { 0, 1 }; TileMode tile_mode = TileMode.MIRROR; // or TileMode.REPEAT; LinearGradient lin_grad = new LinearGradient(0, 0, 0, 50, color, color_position, tile_mode); Shader shader_gradient = lin_grad; team1_name.getPaint().setShader(shader_gradient); team2_name.getPaint().setShader(shader_gradient); //team1_name.setTypeface(font); // team2_name.setTypeface(font); ground.setText(product.get("str_grnd")); product.get("str_sName"); product.get("str_team2_obj_sName"); String first_team_id = product.get("str__team1_id"); String second_team_id = product.get("str_team2_obj_id"); switch (first_team_id) { case "PAK": team1_name.setBackgroundResource(R.drawable.pak); break; case "UAE": team1_name.setBackgroundResource(R.drawable.uae); break; case "AUS": team1_name.setBackgroundResource(R.drawable.aus); break; case "AFG": team1_name.setBackgroundResource(R.drawable.afg); break; case "6": team1_name.setBackgroundResource(R.drawable.ban); break; case "23": team1_name.setBackgroundResource(R.drawable.sco); break; case "2": team1_name.setBackgroundResource(R.drawable.ind); break; case "WI": team1_name.setBackgroundResource(R.drawable.wi); break; case "13": team1_name.setBackgroundResource(R.drawable.nz); break; case "SL": team1_name.setBackgroundResource(R.drawable.sl); break; case "9": team1_name.setBackgroundResource(R.drawable.eng); break; case "27": team1_name.setBackgroundResource(R.drawable.ir); break; case "11": team1_name.setBackgroundResource(R.drawable.rsa); break; case "ZIM": team1_name.setBackgroundResource(R.drawable.zim); break; case "63": team1_name.setBackgroundResource(R.drawable.kol_fl); break; case "62": team1_name.setBackgroundResource(R.drawable.mum_fl); break; case "58": team1_name.setBackgroundResource(R.drawable.chn_fl); break; case "61": team1_name.setBackgroundResource(R.drawable.del_fl); break; case "65": team1_name.setBackgroundResource(R.drawable.pun_fl); break; case "64": team1_name.setBackgroundResource(R.drawable.raj_fl); break; case "255": team1_name.setBackgroundResource(R.drawable.hyd_fl); break; case "59": team1_name.setBackgroundResource(R.drawable.blr_fl); break; default: team1_name.setBackgroundResource(R.drawable.otherflag); // h_upcoming.tv_left.setText(str1); break; } // second team switch (second_team_id) { case "PAK": team2_name.setBackgroundResource(R.drawable.pak); break; case "UAE": team2_name.setBackgroundResource(R.drawable.uae); break; case "AUS": team2_name.setBackgroundResource(R.drawable.aus); break; case "AFG": team2_name.setBackgroundResource(R.drawable.afg); break; case "6": team2_name.setBackgroundResource(R.drawable.ban); break; case "23": team2_name.setBackgroundResource(R.drawable.sco); break; case "2": team2_name.setBackgroundResource(R.drawable.ind); break; case "WI": team2_name.setBackgroundResource(R.drawable.wi); break; case "13": team2_name.setBackgroundResource(R.drawable.nz); break; case "SL": team2_name.setBackgroundResource(R.drawable.sl); break; case "9": team2_name.setBackgroundResource(R.drawable.eng); break; case "27": team2_name.setBackgroundResource(R.drawable.ir); break; case "11": team2_name.setBackgroundResource(R.drawable.rsa); break; case "ZIM": team2_name.setBackgroundResource(R.drawable.zim); break; case "63": team2_name.setBackgroundResource(R.drawable.kol_fl); break; case "62": team2_name.setBackgroundResource(R.drawable.mum_fl); break; case "58": team2_name.setBackgroundResource(R.drawable.chn_fl); break; case "61": team2_name.setBackgroundResource(R.drawable.del_fl); break; case "65": team2_name.setBackgroundResource(R.drawable.pun_fl); break; case "64": team2_name.setBackgroundResource(R.drawable.raj_fl); break; case "255": team2_name.setBackgroundResource(R.drawable.hyd_fl); break; case "59": team2_name.setBackgroundResource(R.drawable.blr_fl); break; default: team1_name.setBackgroundResource(R.drawable.otherflag); // h_upcoming.tv_left.setText(str1); break; } return vi; } } /* private static class CustomViewGroup extends LinearLayout { // ============================================================================= // Child views // ============================================================================= private TextView textView; private ImageView imageView; private Button button; // ============================================================================= // Constructor // ============================================================================= private CustomViewGroup(Context context) { super(context); this.setOrientation(VERTICAL); this.textView = new TextView(context); this.imageView = new ImageView(context); this.button = new Button(context); LinearLayout.LayoutParams layoutParams = new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); this.textView.setLayoutParams(layoutParams); this.imageView.setLayoutParams(layoutParams); this.button.setLayoutParams(layoutParams); this.textView.setGravity(Gravity.CENTER); this.imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE); this.imageView.setAdjustViewBounds(true); this.button.setText("Goto GitHub"); this.button.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse("https://davidschreiber.github.com/FancyCoverFlow")); view.getContext().startActivity(i); } }); this.addView(this.textView); this.addView(this.imageView); this.addView(this.button); } // ============================================================================= // Getters // ============================================================================= private TextView getTextView() { return textView; } private ImageView getImageView() { return imageView; } }*/
findimport android.view.ViewGroup.LayoutParams; 这一行并replace为import android.widget.LinearLayout.LayoutParams; 这条线
