Android在View中的动画

使用Runnable产生新线程

使用postInvalidate进行刷新

package com.hu.move;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.View;

public class MoveView extends View implements Runnable{

    private int y;
    private Paint paint;
    
    public MoveView(Context context) {
        super(context);
        paint=new Paint();
        paint.setColor(Color.GREEN);
        paint.setAntiAlias(true);
        new Thread(this).start();//启动线程
    }

    @Override
    protected void onDraw(Canvas canvas) {//画图
        super.onDraw(canvas);
        canvas.drawLine(0, 0, 300, y, paint);
    }

    public void run() {//新线程
        while(y<400){
            y++;
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            MoveView.this.postInvalidate();//非UI线程进行刷新
        }
    }

}