android 自定义View

int mWidth;
int mHeight;
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec,heightMeasureSpec);
int widthMode = MeasureSpec.getMode(widthMeasureSpec);
int heightMode=MeasureSpec.getMode(heightMeasureSpec);
int widthSize = MeasureSpec.getSize(widthMeasureSpec);
int heightSize = MeasureSpec.getSize(heightMeasureSpec);
//是否是warp_content模式
if (widthMode==MeasureSpec.AT_MOST&&heightMode==MeasureSpec.AT_MOST){
setMeasuredDimension(mWidth,mHeight);
}else if(widthMode==MeasureSpec.AT_MOST){
setMeasuredDimension(mWidth,heightSize);
}else if (heightMode==MeasureSpec.AT_MOST){
setMeasuredDimension(widthSize,mHeight);
}
}