安卓圆形图像

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在开发中，我们会遇见很多问题，比如我现在说的这个问题，就是经常遇见的。

那就是圆形图像，做图像的时候，我就会遇见，还有一些显示图片的时候



废话不说，直接代码。

新建一个类，我们取名字叫做：CircularImage.java

package com.ooyuan.myview;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import android.util.AttributeSet;

public class CircularImage extends MaskedImage {
public CircularImage(Context paramContext) {
super(paramContext);
}

public Circu
4000
larImage(Context paramContext, AttributeSet paramAttributeSet) {
super(paramContext, paramAttributeSet);
}

public CircularImage(Context paramContext, AttributeSet paramAttributeSet, int paramInt) {
super(paramContext, paramAttributeSet, paramInt);
}

public Bitmap createMask() {
int i = getWidth();
int j = getHeight();
Bitmap.Config localConfig = Bitmap.Config.ARGB_8888;
Bitmap localBitmap = Bitmap.createBitmap(i, j, localConfig);
Canvas localCanvas = new Canvas(localBitmap);
Paint localPaint = new Paint(1);
localPaint.setColor(-16777216);
float f1 = getWidth();
float f2 = getHeight();
RectF localRectF = new RectF(0.0F, 0.0F, f1, f2);
localCanvas.drawOval(localRectF, localPaint);
return localBitmap;
}
}

然后在新建一个类叫做：MaskedImage.java

package com.ooyuan.myview;

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.widget.ImageView;

public abstract class MaskedImage extends ImageView {
private static final Xfermode MASK_XFERMODE;
private Bitmap mask;
private Paint paint;

static {
PorterDuff.Mode localMode = PorterDuff.Mode.DST_IN;
MASK_XFERMODE = new PorterDuffXfermode(localMode);
}

public MaskedImage(Context paramContext) {
super(paramContext);
}

public MaskedImage(Context paramContext, AttributeSet paramAttributeSet) {
super(paramContext, paramAttributeSet);
}

public MaskedImage(Context paramContext, AttributeSet paramAttributeSet, int paramInt) {
super(paramContext, paramAttributeSet, paramInt);
}

public abstract Bitmap createMask();

protected void onDraw(Canvas paramCanvas) {
Drawable localDrawable = getDrawable();
if (localDrawable == null)
return;
try {
if (this.paint == null) {
Paint localPaint1 = new Paint();
this.paint = localPaint1;
this.paint.setFilterBitmap(false);
Paint localPaint2 = this.paint;
Xfermode localXfermode1 = MASK_XFERMODE;
@SuppressWarnings("unused")
Xfermode localXfermode2 = localPaint2.setXfermode(localXfermode1);
}
float f1 = getWidth();
float f2 = getHeight();
int i = paramCanvas.saveLayer(0.0F, 0.0F, f1, f2, null, 31);
int j = getWidth();
int k = getHeight();
localDrawable.setBounds(0, 0, j, k);
localDrawable.draw(paramCanvas);
if ((this.mask == null) || (this.mask.isRecycled())) {
Bitmap localBitmap1 = createMask();
this.mask = localBitmap1;
}
Bitmap localBitmap2 = this.mask;
Paint localPaint3 = this.paint;
paramCanvas.drawBitmap(localBitmap2, 0.0F, 0.0F, localPaint3);
paramCanvas.restoreToCount(i);
return;
} catch (Exception localException) {
StringBuilder localStringBuilder = new StringBuilder()
.append("Attempting to draw with recycled bitmap. View ID = ");
System.out.println("localStringBuilder=="+localStringBuilder);
}
}
}

然后在布局代码中引用：

<com.ooyuan.myview.CircularImage
android:layout_width="30dp"
android:layout_height="30dp"
android:id="@+id/zuozhe_ima"
/>

在到你的Activity里面去绑定控件：

//绑定作者图像
zuozhe_ima1 = (CircularImage) findViewById(R.id.zuozhe_ima1);
//给图像设置图片
zuozhe_ima1.setImageResource(R.drawable.你的图片);

//这个里面写你的控件，包名字就是你新建CircularImage.java的包名。

就几步，很简单，有什么不懂的可以来QQ群找我

**请大家关注下我的微信公众号：哦哦猿

QQ群：552123831**