android 显示gif图片

最新推荐文章于 2025-08-09 11:38:39 发布

HappyDelano

最新推荐文章于 2025-08-09 11:38:39 发布

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本文介绍了如何在Android中自定义一个视图类，通过Movie类实现动画效果，并在Activity中进行展示。

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package com.lxy;

import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Movie;
import android.os.Bundle;
import android.view.View;

public class MyActivity extends Activity {
    /** Called when the activity is first created. */
	private MyCustomView mView;  
    private Movie mMovie;  
    private long mMovieStart;  
      
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        mView = new MyCustomView(this);  
          
        setContentView(mView);  
    }  
  
     //自定义一个类，继承View  
    class MyCustomView extends View{  
  
        public MyCustomView(Context context) {  
            super(context);  
            //以文件流的方式读取文件  
            mMovie = Movie.decodeStream(  
                    getResources().openRawResource(R.drawable.bear));  
        }  
          
        @Override  
        protected void onDraw(Canvas canvas) {  
          
            long curTime = android.os.SystemClock.uptimeMillis();  
            //第一次播放  
            if(mMovieStart == 0){  
                mMovieStart = curTime;  
            }  
          
            if(mMovie != null){  
                int duration = mMovie.duration(); 
  
                int relTime = (int)((curTime - mMovieStart)% duration);  
                mMovie.setTime(relTime);  
                mMovie.draw(canvas, 0, 0);  
                  
                //强制重绘    
                invalidate();  
              
            }   
            super.onDraw(canvas);  
        }  
    }  
}

转载自： http://blog.youkuaiyun.com/y13872888163/article/details/6446235