Android自定义View绘制的方法及过程（二）

public class MyView extends View {
 private String TAG = "--------MyView";
 private int width, height;
 public MyView(Context context, AttributeSet attrs) {
 super(context, attrs);
 Log.i(TAG,"MyView()");
 }

 @Override
 protected void onSizeChanged(int w, int h, int oldw, int oldh) {
 super.onSizeChanged(w, h, oldw, oldh);
 width = w;
 height = h;
 Log.i(TAG,"onSizeChanged()");
 }

 @Override
 protected void onDraw(Canvas canvas) {
 super.onDraw(canvas);
 Log.i(TAG,"onDraw()");

 Rect rect = new Rect(0, 0, width, height);
 Paint paint = new Paint();
 paint.setColor(Color.RED);
 canvas.drawRect(rect, paint);
 }

 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
 super.onMeasure(widthMeasureSpec, heightMeasureSpec);
 Log.i(TAG,"onMeasure()");
 }
 

 @Override
 protected void onFinishInflate() {
 super.onFinishInflate();
 Log.i(TAG,"onFinishInflate()");
 }
}

 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
 super.onMeasure(widthMeasureSpec, heightMeasureSpec);
 setMeasuredDimension(100,100);
 }

 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
 super.onMeasure(widthMeasureSpec, heightMeasureSpec);
 int width = MeasureSpec.getSize(widthMeasureSpec);
 int height = MeasureSpec.getSize(heightMeasureSpec));
 }