通过xml循环的ImageView

我想从我的ImageView任何图像是一个边框的圆形。

我search，但无法find任何有用的信息（我试过的任何东西都不起作用）。

我怎样才能达到这一点通过XML：创build一个ImageView与特定的src，并使其与边界循环？

Answer 1

你可以用白色的边框和透明的形状做一个简单的圆形。

 // res/drawable/circle.xml <shape xmlns:android="http://schemas.android.com/apk/res/android" android:innerRadius="0dp" android:shape="ring" android:thicknessRatio="1.9" android:useLevel="false" > <solid android:color="@android:color/transparent" /> <stroke android:width="10dp" android:color="@android:color/white" /> </shape> 

然后创build一个可绘制的图层列表，并将其作为背景添加到您的图像视图中。

 // res/drawable/img.xml <?xml version="1.0" encoding="utf-8"?> <layer-list xmlns:android="http://schemas.android.com/apk/res/android" > <item android:drawable="@drawable/ic_launcher"/> <item android:drawable="@drawable/circle"/> </layer-list> 

并把它作为你的imageview的背景。

  <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/img"/> 

你会有这样的事情。

Answer 2

这是

最简单的方法

我devise的 尝试这个。

 dependencies: compile 'com.android.support:appcompat-v7:23.1.1' compile 'com.android.support:design:23.1.1' compile 'com.android.support:cardview-v7:23.1.1' <android.support.v7.widget.CardView android:layout_width="80dp" android:layout_height="80dp" android:elevation="12dp" android:id="@+id/view2" app:cardCornerRadius="40dp" android:layout_centerHorizontal="true" android:innerRadius="0dp" android:shape="ring" android:thicknessRatio="1.9"> <ImageView android:layout_height="80dp" android:layout_width="match_parent" android:id="@+id/imageView1" android:src="@drawable/YOUR_IMAGE" android:layout_alignParentTop="true" android:layout_centerHorizontal="true"> </ImageView> </android.support.v7.widget.CardView> 

Answer 3

我希望这可能会帮助你。

  <de.hdodenhof.circleimageview.CircleImageView xmlns:app="http://schemas.android.com/apk/res-auto" android:id="@+id/profile_image" android:layout_width="120dp" android:layout_height="120dp" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:src="@drawable/your_picture" app:border_color="@color/white" app:border_width="3dp" /> 

注意：在build.gradle> dependencies中添加这个。

  compile 'de.hdodenhof:circleimageview:1.3.0' 

有关完整的描述，请查看： 来源。

Answer 4

如果您使用src属性，上述方法似乎不起作用。 我所做的就是把两个图像视图放在一个框架布局中，就像这样。

 <FrameLayout android:id="@+id/frame" android:layout_width="40dp" android:layout_height="40dp"> <ImageView android:id="@+id/pic" android:layout_width="40dp" android:layout_height="40dp" android:src="@drawable/my_picture" /> <ImageView android:id="@+id/circle_crop" android:layout_width="40dp" android:layout_height="40dp" android:src="@drawable/circle_crop" /> </FrameLayout> 

简单地把circular_crop.png放在你的图像尺寸（我的情况下为Square）形状的可绘制文件夹中，背景为白色，中央有一个透明圆圈。 如果你想要一个正方形的图像视图，你可以使用这个图像。

只要下载上面的图片。

Answer 5

以下是最简单的方法之一，请使用以下代码：

依赖

 dependencies { ... compile 'de.hdodenhof:circleimageview:2.1.0' } 

XML代码

 <de.hdodenhof.circleimageview.CircleImageView xmlns:app="http://schemas.android.com/apk/res-auto" android:id="@+id/profile_image" android:layout_width="96dp" android:layout_height="96dp" android:src="@drawable/profile" app:civ_border_width="2dp" app:civ_border_color="#FF000000"/> 

截图：

来源： Circular ImageView GitHub存储库

Answer 6

在glide库和RoundedBitmapDrawableFactory类的帮助下，很容易实现。 您可能需要创build一个循环的占位符图像。

  Glide.with(context) .load(imgUrl) .asBitmap() .placeholder(R.drawable.placeholder) .error(R.drawable.placeholder) .into(new BitmapImageViewTarget(imgProfilePicture) { @Override protected void setResource(Bitmap resource) { RoundedBitmapDrawable drawable = RoundedBitmapDrawableFactory.create(context.getResources(), Bitmap.createScaledBitmap(resource, 50, 50, false)); drawable.setCircular(true); imgProfilePicture.setImageDrawable(drawable); } }); 

Answer 7

我使用shape =“oval”而不是下面的“ring”。 它为我工作。 为了保持图像的边界，我使用<padding>并在<ImageView>中将<adjustViewBounds>设置为true。 我曾尝试过尺寸在50 x 50 px到200×200 px之间的图片。

Answer 8

这将做的伎俩：

rectangle.xml

 <?xml version="1.0" encoding="UTF-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <solid android:color="@android:color/transparent" /> <padding android:bottom="-14dp" android:left="-14dp" android:right="-14dp" android:top="-14dp" /> </shape> 

circle.xml

 <shape xmlns:android="http://schemas.android.com/apk/res/android" android:innerRadius="0dp" android:shape="oval" android:useLevel="false" > <solid android:color="@android:color/transparent" /> <stroke android:width="15dp" android:color="@color/verification_contact_background" /> </shape> 

profile_image.xml（图层列表）

 <?xml version="1.0" encoding="utf-8"?> <layer-list xmlns:android="http://schemas.android.com/apk/res/android" > <item android:drawable="@drawable/rectangle" /> <item android:drawable="@drawable/circle"/> </layer-list> 

你的布局

  <ImageView android:id="@+id/profile_image" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@drawable/default_org" android:src="@drawable/profile_image"/> 

Answer 9

在你的包里创build下面的类

 import android.content.Context; import android.content.res.TypedArray; import android.graphics.Bitmap; import android.graphics.BitmapShader; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.ColorFilter; import android.graphics.Matrix; import android.graphics.Paint; import android.graphics.RectF; import android.graphics.Shader; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.ColorDrawable; import android.graphics.drawable.Drawable; import android.net.Uri; import android.support.annotation.ColorInt; import android.support.annotation.ColorRes; import android.support.annotation.DrawableRes; import android.util.AttributeSet; import android.widget.ImageView; import com.synergyifs.fitnessmantra.R; /** * Created by Admin34 on 08-12-2015. */ public class CircleImageView extends ImageView { private static final ScaleType SCALE_TYPE = ScaleType.CENTER_CROP; private static final Bitmap.Config BITMAP_CONFIG = Bitmap.Config.ARGB_8888; private static final int COLORDRAWABLE_DIMENSION = 2; private static final int DEFAULT_BORDER_WIDTH = 0; private static final int DEFAULT_BORDER_COLOR = Color.BLACK; private static final int DEFAULT_FILL_COLOR = Color.TRANSPARENT; private static final boolean DEFAULT_BORDER_OVERLAY = false; private final RectF mDrawableRect = new RectF(); private final RectF mBorderRect = new RectF(); private final Matrix mShaderMatrix = new Matrix(); private final Paint mBitmapPaint = new Paint(); private final Paint mBorderPaint = new Paint(); private final Paint mFillPaint = new Paint(); private int mBorderColor = DEFAULT_BORDER_COLOR; private int mBorderWidth = DEFAULT_BORDER_WIDTH; private int mFillColor = DEFAULT_FILL_COLOR; private Bitmap mBitmap; private BitmapShader mBitmapShader; private int mBitmapWidth; private int mBitmapHeight; private float mDrawableRadius; private float mBorderRadius; private ColorFilter mColorFilter; private boolean mReady; private boolean mSetupPending; private boolean mBorderOverlay; public CircleImageView(Context context) { super(context); init(); } public CircleImageView(Context context, AttributeSet attrs) { this(context, attrs, 0); } public CircleImageView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CircleImageView, defStyle, 0); mBorderWidth = a.getDimensionPixelSize(R.styleable.CircleImageView_civ_border_width, DEFAULT_BORDER_WIDTH); mBorderColor = a.getColor(R.styleable.CircleImageView_civ_border_color, DEFAULT_BORDER_COLOR); mBorderOverlay = a.getBoolean(R.styleable.CircleImageView_civ_border_overlay, DEFAULT_BORDER_OVERLAY); mFillColor = a.getColor(R.styleable.CircleImageView_civ_fill_color, DEFAULT_FILL_COLOR); a.recycle(); init(); } private void init() { super.setScaleType(SCALE_TYPE); mReady = true; if (mSetupPending) { setup(); mSetupPending = false; } } @Override public ScaleType getScaleType() { return SCALE_TYPE; } @Override public void setScaleType(ScaleType scaleType) { if (scaleType != SCALE_TYPE) { throw new IllegalArgumentException(String.format("ScaleType %s not supported.", scaleType)); } } @Override public void setAdjustViewBounds(boolean adjustViewBounds) { if (adjustViewBounds) { throw new IllegalArgumentException("adjustViewBounds not supported."); } } @Override protected void onDraw(Canvas canvas) { if (mBitmap == null) { return; } if (mFillColor != Color.TRANSPARENT) { canvas.drawCircle(getWidth() / 2.0f, getHeight() / 2.0f, mDrawableRadius, mFillPaint); } canvas.drawCircle(getWidth() / 2.0f, getHeight() / 2.0f, mDrawableRadius, mBitmapPaint); if (mBorderWidth != 0) { canvas.drawCircle(getWidth() / 2.0f, getHeight() / 2.0f, mBorderRadius, mBorderPaint); } } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); setup(); } public int getBorderColor() { return mBorderColor; } public void setBorderColor(@ColorInt int borderColor) { if (borderColor == mBorderColor) { return; } mBorderColor = borderColor; mBorderPaint.setColor(mBorderColor); invalidate(); } public void setBorderColorResource(@ColorRes int borderColorRes) { setBorderColor(getContext().getResources().getColor(borderColorRes)); } public int getFillColor() { return mFillColor; } public void setFillColor(@ColorInt int fillColor) { if (fillColor == mFillColor) { return; } mFillColor = fillColor; mFillPaint.setColor(fillColor); invalidate(); } public void setFillColorResource(@ColorRes int fillColorRes) { setFillColor(getContext().getResources().getColor(fillColorRes)); } public int getBorderWidth() { return mBorderWidth; } public void setBorderWidth(int borderWidth) { if (borderWidth == mBorderWidth) { return; } mBorderWidth = borderWidth; setup(); } public boolean isBorderOverlay() { return mBorderOverlay; } public void setBorderOverlay(boolean borderOverlay) { if (borderOverlay == mBorderOverlay) { return; } mBorderOverlay = borderOverlay; setup(); } @Override public void setImageBitmap(Bitmap bm) { super.setImageBitmap(bm); mBitmap = bm; setup(); } @Override public void setImageDrawable(Drawable drawable) { super.setImageDrawable(drawable); mBitmap = getBitmapFromDrawable(drawable); setup(); } @Override public void setImageResource(@DrawableRes int resId) { super.setImageResource(resId); mBitmap = getBitmapFromDrawable(getDrawable()); setup(); } @Override public void setImageURI(Uri uri) { super.setImageURI(uri); mBitmap = uri != null ? getBitmapFromDrawable(getDrawable()) : null; setup(); } @Override public void setColorFilter(ColorFilter cf) { if (cf == mColorFilter) { return; } mColorFilter = cf; mBitmapPaint.setColorFilter(mColorFilter); invalidate(); } private Bitmap getBitmapFromDrawable(Drawable drawable) { if (drawable == null) { return null; } if (drawable instanceof BitmapDrawable) { return ((BitmapDrawable) drawable).getBitmap(); } try { Bitmap bitmap; if (drawable instanceof ColorDrawable) { bitmap = Bitmap.createBitmap(COLORDRAWABLE_DIMENSION, COLORDRAWABLE_DIMENSION, BITMAP_CONFIG); } else { bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), BITMAP_CONFIG); } Canvas canvas = new Canvas(bitmap); drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight()); drawable.draw(canvas); return bitmap; } catch (Exception e) { e.printStackTrace(); return null; } } private void setup() { if (!mReady) { mSetupPending = true; return; } if (getWidth() == 0 && getHeight() == 0) { return; } if (mBitmap == null) { invalidate(); return; } mBitmapShader = new BitmapShader(mBitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP); mBitmapPaint.setAntiAlias(true); mBitmapPaint.setShader(mBitmapShader); mBorderPaint.setStyle(Paint.Style.STROKE); mBorderPaint.setAntiAlias(true); mBorderPaint.setColor(mBorderColor); mBorderPaint.setStrokeWidth(mBorderWidth); mFillPaint.setStyle(Paint.Style.FILL); mFillPaint.setAntiAlias(true); mFillPaint.setColor(mFillColor); mBitmapHeight = mBitmap.getHeight(); mBitmapWidth = mBitmap.getWidth(); mBorderRect.set(0, 0, getWidth(), getHeight()); mBorderRadius = Math.min((mBorderRect.height() - mBorderWidth) / 2.0f, (mBorderRect.width() - mBorderWidth) / 2.0f); mDrawableRect.set(mBorderRect); if (!mBorderOverlay) { mDrawableRect.inset(mBorderWidth, mBorderWidth); } mDrawableRadius = Math.min(mDrawableRect.height() / 2.0f, mDrawableRect.width() / 2.0f); updateShaderMatrix(); invalidate(); } private void updateShaderMatrix() { float scale; float dx = 0; float dy = 0; mShaderMatrix.set(null); if (mBitmapWidth * mDrawableRect.height() > mDrawableRect.width() * mBitmapHeight) { scale = mDrawableRect.height() / (float) mBitmapHeight; dx = (mDrawableRect.width() - mBitmapWidth * scale) * 0.5f; } else { scale = mDrawableRect.width() / (float) mBitmapWidth; dy = (mDrawableRect.height() - mBitmapHeight * scale) * 0.5f; } mShaderMatrix.setScale(scale, scale); mShaderMatrix.postTranslate((int) (dx + 0.5f) + mDrawableRect.left, (int) (dy + 0.5f) + mDrawableRect.top); mBitmapShader.setLocalMatrix(mShaderMatrix); } } 

现在在你的布局xml文件中使用这个类，如下所示

  <yourpackagename.CircleImageView android:id="@+id/iv_profile_pic" android:layout_width="120dp" android:layout_height="120dp" android:layout_centerHorizontal="true" app:civ_border_color="#f46d7e" app:civ_border_width="5dp"/> 

Answer 10

壁画SimpleDraweeView将为此提供帮助。

 <com.facebook.drawee.view.SimpleDraweeView android:id="@+id/profile_view" android:layout_width="50dp" android:layout_height="50dp" fresco:placeholderImage="@drawable/YOUR_DRAWABLE" fresco:roundAsCircle="true" /> 

我发现最简单和最顺利的图书馆。 希望这会有所帮助。

壁画图书馆

Answer 11

使用下面的代码，你可以修改它：

 import android.content.Context; import android.graphics.Bitmap; import android.graphics.Bitmap.Config; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.PorterDuff.Mode; import android.graphics.PorterDuffXfermode; import android.graphics.Rect; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.widget.ImageView; public class RoundedImageView extends ImageView { public RoundedImageView(Context context) { super(context); } public RoundedImageView(Context context, AttributeSet attrs) { super(context, attrs); } public RoundedImageView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } @Override protected void onDraw(Canvas canvas) { Drawable drawable = getDrawable(); if (drawable == null) { return; } if (getWidth() == 0 || getHeight() == 0) { return; } Bitmap b = ((BitmapDrawable) drawable).getBitmap(); Bitmap bitmap = b.copy(Bitmap.Config.ARGB_8888, true); int w = getWidth(); @SuppressWarnings("unused") int h = getHeight(); Bitmap roundBitmap = getCroppedBitmap(bitmap, w); canvas.drawBitmap(roundBitmap, 0, 0, null); } public static Bitmap getCroppedBitmap(Bitmap bmp, int radius) { Bitmap sbmp; if (bmp.getWidth() != radius || bmp.getHeight() != radius) { float smallest = Math.min(bmp.getWidth(), bmp.getHeight()); float factor = smallest / radius; sbmp = Bitmap.createScaledBitmap(bmp, (int) (bmp.getWidth() / factor), (int) (bmp.getHeight() / factor), false); } else { sbmp = bmp; } Bitmap output = Bitmap.createBitmap(radius, radius, Config.ARGB_8888); Canvas canvas = new Canvas(output); final String color = "#BAB399"; final Paint paint = new Paint(); final Rect rect = new Rect(0, 0, radius, radius); paint.setAntiAlias(true); paint.setFilterBitmap(true); paint.setDither(true); canvas.drawARGB(0, 0, 0, 0); paint.setColor(Color.parseColor(color)); canvas.drawCircle(radius / 2 + 0.7f, radius / 2 + 0.7f, radius / 2 + 0.1f, paint); paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN)); canvas.drawBitmap(sbmp, rect, rect, paint); return output; } } 

Answer 12

你有尝试过吗？

公共类RoundedImageView扩展android.support.v7.widget.AppCompatImageView {

 private int borderWidth = 4; private int viewWidth; private int viewHeight; private Bitmap image; private Paint paint; private Paint paintBorder; private BitmapShader shader; public RoundedImageView(Context context) { super(context); setup(); } public RoundedImageView(Context context, AttributeSet attrs) { super(context, attrs); setup(); } public RoundedImageView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); setup(); } private void setup() { paint = new Paint(); paint.setAntiAlias(true); paintBorder = new Paint(); setBorderColor(Color.WHITE); paintBorder.setAntiAlias(true); this.setLayerType(LAYER_TYPE_SOFTWARE, paintBorder); paintBorder.setShadowLayer(4.0f, 0.0f, 2.0f, Color.WHITE); } public void setBorderWidth(int borderWidth) { this.borderWidth = borderWidth; this.invalidate(); } public void setBorderColor(int borderColor) { if (paintBorder != null) paintBorder.setColor(borderColor); this.invalidate(); } private void loadBitmap() { BitmapDrawable bitmapDrawable = (BitmapDrawable) this.getDrawable(); if (bitmapDrawable != null) image = bitmapDrawable.getBitmap(); } @SuppressLint("DrawAllocation") @Override public void onDraw(Canvas canvas) { loadBitmap(); if (image != null) { shader = new BitmapShader(Bitmap.createScaledBitmap(image, canvas.getWidth(), canvas.getHeight(), false), Shader.TileMode.CLAMP, Shader.TileMode.CLAMP); paint.setShader(shader); int circleCenter = viewWidth / 2; canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter + borderWidth - 4.0f, paintBorder); canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter - 4.0f, paint); } } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int width = measureWidth(widthMeasureSpec); int height = measureHeight(heightMeasureSpec, widthMeasureSpec); viewWidth = width - (borderWidth * 2); viewHeight = height - (borderWidth * 2); setMeasuredDimension(width, height); } private int measureWidth(int measureSpec) { int result = 0; int specMode = MeasureSpec.getMode(measureSpec); int specSize = MeasureSpec.getSize(measureSpec); if (specMode == MeasureSpec.EXACTLY) { result = specSize; } else { // Measure the text result = viewWidth; } return result; } private int measureHeight(int measureSpecHeight, int measureSpecWidth) { int result = 0; int specMode = MeasureSpec.getMode(measureSpecHeight); int specSize = MeasureSpec.getSize(measureSpecHeight); if (specMode == MeasureSpec.EXACTLY) { result = specSize; } else { result = viewHeight; } return (result + 2); } } 

并在布局中使用此Imageview，如：

  <com.app.Demo.RoundedImageView android:id="@+id/iv_profileImage" android:layout_width="70dp" android:layout_height="70dp" android:layout_centerHorizontal="true" />