效果图：
使用：
2个类：
CircleImageView类：
package com.lzyi.tpm.utils;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.util.AttributeSet;
import io.jchat.android.view.BaseImageView;
public class CircleImageViewextends BaseImageView {
public CircleImageView(Context context) {
super(context);
}
public CircleImageView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public CircleImageView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public static BitmapgetBitmap(int width, int height) {
Bitmap bitmap = Bitmap.createBitmap(width, height,
Bitmap.Config.ARGB_8888);
Canvas canvas =new Canvas(bitmap);
Paint paint =new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setColor(Color.BLACK);
canvas.drawOval(new RectF(0.0f, 0.0f, width, height), paint);
return bitmap;
}
@Override
public BitmapgetBitmap() {
return getBitmap(getWidth(), getHeight());
}
}
BaseImageView类:
package io.jchat.android.view;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.Xfermode;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.ImageView;
import java.lang.ref.WeakReference;
public abstract class BaseImageViewextends ImageView {
private static final StringTAG = BaseImageView.class.getSimpleName();
protected ContextmContext;
private static final XfermodesXfermode =new PorterDuffXfermode(PorterDuff.Mode.DST_IN);
// private BitmapShader mBitmapShader;
private BitmapmMaskBitmap;
private PaintmPaint;
private WeakReferencemWeakBitmap;
public BaseImageView(Context context) {
super(context);
sharedConstructor(context);
}
public BaseImageView(Context context, AttributeSet attrs) {
super(context, attrs);
sharedConstructor(context);
}
public BaseImageView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
sharedConstructor(context);
}
private void sharedConstructor(Context context) {
mContext = context;
mPaint =new Paint(Paint.ANTI_ALIAS_FLAG);
}
public void invalidate() {
mWeakBitmap =null;
if (mMaskBitmap !=null) {mMaskBitmap.recycle(); }
super.invalidate();
}
@SuppressLint("DrawAllocation")
@Override
protected void onDraw(Canvas canvas) {
if (!isInEditMode()) {
int i = canvas.saveLayer(0.0f, 0.0f, getWidth(), getHeight(),
null, Canvas.ALL_SAVE_FLAG);
try {
Bitmap bitmap =mWeakBitmap !=null ?mWeakBitmap.get() :null;
// Bitmap not loaded.
if (bitmap ==null || bitmap.isRecycled()) {
Drawable drawable = getDrawable();
if (drawable !=null) {
// Allocation onDraw but it's ok because it will not always be called.
bitmap = Bitmap.createBitmap(getWidth(),
getHeight(), Bitmap.Config.ARGB_8888);
Canvas bitmapCanvas =new Canvas(bitmap);
drawable.setBounds(0, 0, getWidth(), getHeight());
drawable.draw(bitmapCanvas);
// If mask is already set, skip and use cached mask.
if (mMaskBitmap ==null ||mMaskBitmap.isRecycled()) {
mMaskBitmap = getBitmap();
}
// Draw Bitmap.
mPaint.reset();
mPaint.setFilterBitmap(false);
mPaint.setXfermode(sXfermode);
// mBitmapShader = new BitmapShader(mMaskBitmap,
// Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
// mPaint.setShader(mBitmapShader);
bitmapCanvas.drawBitmap(mMaskBitmap, 0.0f, 0.0f, mPaint);
mWeakBitmap =new WeakReference(bitmap);
}
}
// Bitmap already loaded.
if (bitmap !=null) {
mPaint.setXfermode(null);
// mPaint.setShader(null);
canvas.drawBitmap(bitmap, 0.0f, 0.0f, mPaint);
return;
}
}catch (Exception e) {
System.gc();
Log.e(TAG, String.format("Failed to draw, Id :: %s. Error occurred :: %s", getId(), e.toString()));
}finally {
canvas.restoreToCount(i);
}
}else {
super.onDraw(canvas);
}
}
public abstract BitmapgetBitmap();
}