Api Demo - .graphics(2)

//关键字：Drawable 添加矢量动画

package com.example.android.apis.graphics;

import com.example.android.apis.R;

import android.app.Activity;
import android.content.Context;
import android.graphics.*;
import android.graphics.drawable.*;
import android.view.animation.*;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;

public class AnimateDrawables extends GraphicsActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(new SampleView(this));
    }
    
    private static class SampleView extends View {
        private AnimateDrawable mDrawable;

        public SampleView(Context context) {
            super(context);
            setFocusable(true);
            setFocusableInTouchMode(true);

            Drawable dr = context.getResources().getDrawable(R.drawable.beach);
            dr.setBounds(0, 0, dr.getIntrinsicWidth(), dr.getIntrinsicHeight());//是缩放不是截取
            
            Animation an = new TranslateAnimation(0, 100, 0, 200);
            an.setDuration(2000);
            an.setRepeatCount(-1);
            an.initialize(10, 10, 10, 10);//传值可以任意。但是必须做次步骤
            
            mDrawable = new AnimateDrawable(dr, an);//Drawable 添加动画
            an.startNow();
        }
        
        @Override protected void onDraw(Canvas canvas) {
            canvas.drawColor(Color.WHITE);

            mDrawable.draw(canvas);
            invalidate();
        }
    }
}