第一部分是自定义的气泡效果的View，代码如下
public class BitmapShapeView extends View {
private Paint mPaint;
private Path mPath;//包裹图片的那个不规则气泡给需要自己用Path实现
private BitmapShader mBitmapShader;//填充起泡的渲染器
private Bitmap mBitmap;
private int mDefaultMinWidth = Constant.CHAT_MSG_IMG_DEFAULT_MIN_WIDTH;
private int mDefaultMinHeight = Constant.CHAT_MSG_IMG_DEFAULT_MIN_HEIGHT;
private int mBubbleRadius = 16;
private int mTriangleSize = 16;
private int mDirection = 2;
public BitmapShapeView(Context context, AttributeSet attrs) {
super(context, attrs);
mBitmap = BitmapUtils.resetBitmap(BitmapFactory.decodeResource(getResources(), R.drawable.logo_gray), mDefaultMinWidth, mDefaultMinHeight);
mBitmapShader = new BitmapShader(mBitmap, Shader.TileMode.REPEAT, Shader.TileMode.REPEAT);
mPaint = new Paint();
mPath = new Path();
TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.BubbleImageView);
mBubbleRadius = array.getDimensionPixelSize(R.styleable.BubbleImageView_bubbleRadius, 16);
mTriangleSize = array.getDimensionPixelSize(R.styleable.BubbleImageView_bubbleTriangleSize, 16);
mDirection = array.getInt(R.styleable.BubbleImageView_bubbleDirection, 2);
mDefaultMinWidth = array.getDimensionPixelSize(R.styleable.BubbleImageView_bubbleDefaultMinWidth, Constant.CHAT_MSG_IMG_DEFAULT_MIN_WIDTH);
mDefaultMinHeight = array.getDimensionPixelSize(R.styleable.BubbleImageView_bubbleDefaultMinHeight, Constant.CHAT_MSG_IMG_DEFAULT_MIN_HEIGHT);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.save();
mPaint.setStyle(Paint.Style.FILL);
mPaint.setShader(mBitmapShader);
canvas.drawPath(mPath, mPaint);
mPaint.reset();
canvas.restore();
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
if (mBitmap != null) {
setMeasuredDimension(mBitmap.getWidth(), mBitmap.getHeight());
mPath.reset();
int width = getMeasuredWidth();
int height = getMeasuredHeight();
//画三角
if (mDirection == 1) {//左三角
mPath.moveTo(mTriangleSize, height / 3 + mTriangleSize / 2);
mPath.lineTo(0, height / 3);
mPath.lineTo(mTriangleSize, height / 3 - mTriangleSize / 2);
mPath.arcTo(new RectF(mTriangleSize, 0, mTriangleSize + mBubbleRadius * 2, mBubbleRadius * 2), 180, 90);//起始位置的角度值,旋转的角度值
mPath.lineTo(width - mBubbleRadius, 0);
mPath.arcTo(new RectF(width - mBubbleRadius * 2, 0, width, mBubbleRadius * 2), -90, 90);
mPath.lineTo(width, height - mBubbleRadius);
mPath.arcTo(new RectF(width - 2 * mBubbleRadius, height - mBubbleRadius * 2, width, height), 0, 90);
mPath.lineTo(mTriangleSize + mBubbleRadius, height);
mPath.arcTo(new RectF(mTriangleSize, height - mBubbleRadius * 2, mTriangleSize + mBubbleRadius * 2, height), 90, 90);
mPath.close();
} else if (mDirection == 2) {//右三角
mPath.moveTo(0, mBubbleRadius);
mPath.arcTo(new RectF(0, 0, mBubbleRadius * 2, mBubbleRadius * 2), 180, 90);//起始位置的角度值,旋转的角度值
mPath.lineTo(width - mBubbleRadius + mTriangleSize, 0);
mPath.arcTo(new RectF(width - mBubbleRadius * 2 - mTriangleSize, 0, width - mTriangleSize, mBubbleRadius * 2), -90, 90);
mPath.lineTo(width - mTriangleSize, height / 3 - mTriangleSize / 2);
mPath.lineTo(width, height / 3);
// mPath.lineTo(width-1,height/3-1);
// mPath.arcTo(new RectF(width-4,height/3-4, width, height/3+4), -90, 180);
mPath.lineTo(width - mTriangleSize, height / 3 + mTriangleSize / 2);
mPath.lineTo(width - mTriangleSize, height - mBubbleRadius);
mPath.arcTo(new RectF(width - 2 * mBubbleRadius - mTriangleSize, height - mBubbleRadius * 2, width - mTriangleSize, height), 0, 90);
mPath.lineTo(mBubbleRadius, height);
mPath.arcTo(new RectF(0, height - mBubbleRadius * 2, mBubbleRadius * 2, height), 90, 90);
mPath.close();
}
}
}
public void setImageSrc(String path) {
mBitmap = BitmapUtils.resetBitmap(BitmapFactory.decodeFile(path), mDefaultMinWidth, mDefaultMinHeight);
mBitmapShader = new BitmapShader(mBitmap, Shader.TileMode.REPEAT, Shader.TileMode.REPEAT);
requestLayout();
invalidate();
}
public void setImageSrc(int resId) {
mBitmap = BitmapUtils.resetBitmap(BitmapFactory.decodeResource(getResources(), resId), mDefaultMinWidth, mDefaultMinHeight);
mBitmapShader = new BitmapShader(mBitmap, Shader.TileMode.REPEAT, Shader.TileMode.REPEAT);
requestLayout();
invalidate();
}
public void setImageBitmap(Bitmap bitmap) {
mBitmap = BitmapUtils.resetBitmap(bitmap, mDefaultMinWidth, mDefaultMinHeight);
mBitmapShader = new BitmapShader(mBitmap, Shader.TileMode.REPEAT, Shader.TileMode.REPEAT);
requestLayout();//一定得加上这方法，否则当加载不同的View时，View方法的onMeasure不会重新调用
invalidate();
}
}
第二部分是属性值部分，设置气泡的圆角，气泡三角的大小，图片显示最小的宽高值，代码如下：
最后只要在你的layout文件里使用这自定义的View就能显示气泡图片了。初次写，代码不完善的地方希望同学们能不吝赐教啊，O(∩_∩)O
