Android显示GIF动画完整示例(二)

MainActivity如下:

package cc.testgif2;



import android.os.Bundle;

import android.app.Activity;

/**

 * Demo描述:

 * 利用自定义View控件显示GIF动画

 * 详细代码参见GIFView

 * 

 * 参考资料:

 * http://blog.csdn.net/dawanganban/article/details/9816083

 * Thank you very much

 */

public class MainActivity extends Activity {



	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.main);

	}

}

 

GIFView如下:

package cc.testgif2;



import android.content.Context;

import android.graphics.Canvas;

import android.graphics.Movie;

import android.util.AttributeSet;

import android.view.View;



public class GIFView extends View {

    private Movie mMovie;

    private long startTime;

    private  int gifDuration;

    private boolean isBeginPlay=true;

	public GIFView(Context context, AttributeSet attrs, int defStyle) {

		super(context, attrs, defStyle);

		init();

	}



	public GIFView(Context context, AttributeSet attrs) {

		super(context, attrs);

		init();

	}



	public GIFView(Context context) {

		super(context);

		init();

	}

	

	private void init(){

		mMovie = Movie.decodeStream(getResources().openRawResource(R.drawable.gif));

		gifDuration= mMovie.duration();

	}

	

	@Override

	protected void onDraw(Canvas canvas) {

		super.onDraw(canvas);

		// 从开机到现在的毫秒(不包括手机睡眠的时间在内)

		long currrentTime = android.os.SystemClock.uptimeMillis();

		// 第一次播放

		if (isBeginPlay) {

			startTime = currrentTime;

			isBeginPlay = false;

		}



		int playTime = (int) ((currrentTime - startTime) % gifDuration);

		mMovie.setTime(playTime);

		mMovie.draw(canvas, 0, 0);

		// 重绘

		invalidate();

	}



}

main.xml如下:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

  >



    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/hello_world" 

        android:layout_centerHorizontal="true"/>

    

    <cc.testgif2.GIFView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerInParent="true"

    />



</RelativeLayout>