自定义imageview使头像变圆

一.自定义的抽象类 imageview

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);

}

}

}

二.头像变圆的类，继承了上述的自定义类

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 CircularImage(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;

}

}

这些还没完啊 ！要在布局中设置图片的宽和高啊，千万别忘了啊、、、、、、、

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