Android-Android播放GIF的方法是什么？

Question

想在自己的Android项目启动的时候播放一个GIF动画，但是我寻找了很多Android开发的书籍，都没有提到播放GIF动画的相关API接口。难道Android不支持播放GIF动画？如果真的不支持的话，那如果要播放这个GIF动画，该怎么办？

Answer 1

我这有个demo你可以试下。

public class ActivityA extends Activity {
TextView text;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new GifView(this));
}

private class GifView extends View {
private Movie mMovie;
private long mMovieStart;

public GifView(Context context) {
super(context);
setFocusable(true);
InputStream is = this.getResources().openRawResource(R.drawable.test_gif);
if (true) {
mMovie = Movie.decodeStream(is);
} else {
byte[] array = streamToBytes(is);
mMovie = Movie.decodeByteArray(array, 0, array.length);
}
}

@Override
protected void onDraw(Canvas canvas) {
canvas.drawColor(0xFFCCCCCC);
long now = android.os.SystemClock.uptimeMillis();
if (mMovieStart == 0) { // first time
mMovieStart = now;
}
if (mMovie != null) {
int dur = mMovie.duration();
if (dur == 0) {
dur = 1000;
}
int relTime = (int) ((now - mMovieStart) % dur);
mMovie.setTime(relTime);
mMovie.draw(canvas, 0, 0);
invalidate();
}
}
}

private static byte[] streamToBytes(InputStream is) {
ByteArrayOutputStream os = new ByteArrayOutputStream(1024);
byte[] buffer = new byte[1024];
int len;
try {
while ((len = is.read(buffer)) >= 0) {
os.write(buffer, 0, len);
}
} catch (java.io.IOException e) {
}
return os.toByteArray();
}

}