1.准备工作
implementation'com.youth.banner:banner:1.4.10' //图片轮播
implementation'tv.danmaku.ijk.media:ijkplayer-java:0.8.8' //视频播放器
implementation'tv.danmaku.ijk.media:ijkplayer-armv7a:0.8.8'
2.代码
public class ScreenSaverActivity extends AppCompatActivity {
private final String TAG_NAME = "ScreenSaverActivity: %s";
private SurfaceView surfaceView;
private IjkMediaPlayer mPlayer;
private Banner banner;
private ArrayList screenSaverResource = new ArrayList<>();
{
/** 网络资源测试**/
// screenSaverResource.add("http://vd3.bdstatic.com/mda-jinpn2ghm53htxvb/sc/mda-jinpn2ghm53htxvb.mp4");
// screenSaverResource.add("http://vd2.bdstatic.com/mda-jhffxctu0n1tvhhd/sc/mda-jhffxctu0n1tvhhd.mp4");
}
private SurfaceHolder.Callback callback = new SurfaceHolder.Callback() {
@Override
public void surfaceCreated(SurfaceHolder holder) {
createPlayer();
mPlayer.setDisplay(surfaceView.getHolder());
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
if (surfaceView != null) {
surfaceView.getHolder().removeCallback(callback);
surfaceView = null;
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);//remove title bar 即隐藏标题栏
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_screen_saver);
surfaceView = findViewById(R.id.surface_view);
banner = findViewById(R.id.banner);
init();
}
private void init() {
//获取本地屏保资源
Resource resource = Resource.getResource(this);
screenSaverResource = resource.getScreenSaverImgResource();
if (screenSaverResource == null || screenSaverResource.isEmpty()) {
return;
}
//判断是否是视频资源
if (screenSaverResource.get(0).contains(".mp4") || screenSaverResource.get(0).contains(".MP4")) {
banner.setVisibility(View.GONE);
surfaceView.getHolder().addCallback(callback);
} else {
surfaceView.setVisibility(View.GONE);
//设置图片加载器
banner.setImageLoader(new GlideImageLoader());
banner.setImages(screenSaverResource);
banner.setDelayTime(15 * 1000);
//banner设置方法全部调用完毕时最后调用
banner.start();
}
}
public class GlideImageLoader extends ImageLoader {
@Override
public void displayImage(Context context, Object path, ImageView imageView) {
Glide.with(context).load(path).apply(new RequestOptions().diskCacheStrategy(DiskCacheStrategy.NONE)).into(imageView);
}
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
this.finish();
return super.dispatchTouchEvent(ev);
}
private void switchResources() {
mPlayer.reset();
try {
String resource = screenSaverResource.get(0);
screenSaverResource.remove(0);
screenSaverResource.add(resource);
adaptionLayout(resource);
mPlayer.setDataSource(this, Uri.parse(resource));
} catch (IOException e) {
Logger.e(TAG_NAME, "屏保文件解析错误：" + e.getMessage());
e.printStackTrace();
}
mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mPlayer.prepareAsync();
mPlayer.setDisplay(surfaceView.getHolder());
}
/***********************************************************************************************
* 创建视频播放器
**********************************************************************************************/
private void createPlayer() {
if (mPlayer == null) {
mPlayer = new IjkMediaPlayer();
IjkMediaPlayer.loadLibrariesOnce(null);
IjkMediaPlayer.native_profileBegin("libijkplayer.so");
mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
try {
String resource = screenSaverResource.get(screenSaverResource.size() - 1);
adaptionLayout(resource);
mPlayer.setDataSource(this, Uri.parse(resource));
} catch (IOException e) {
Logger.e(TAG_NAME, "屏保文件解析错误：" + e.getMessage());
e.printStackTrace();
}
mPlayer.prepareAsync();
mPlayer.setOnCompletionListener(new IMediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(IMediaPlayer iMediaPlayer) {
switchResources();
}
});
}
}
/***********************************************************************************************
* 释放视频播放器资源
**********************************************************************************************/
private void release() {
if (mPlayer != null) {
mPlayer.stop();
mPlayer.release();
mPlayer = null;
IjkMediaPlayer.native_profileEnd();
}
}
@Override
protected void onDestroy() {
super.onDestroy();
release();
}
/***********************************************************************************************
* 视频自动适应布局
* @param path 播放资源
**********************************************************************************************/
private void adaptionLayout(String path) {
android.media.MediaMetadataRetriever mmr = new android.media.MediaMetadataRetriever();
if (path == null) {
return;
}
try {
mmr.setDataSource(path);
int width = Integer.parseInt(mmr.extractMetadata(android.media.MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH));//宽
int height = Integer.parseInt(mmr.extractMetadata(android.media.MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT));//高
//根据屏幕宽高设置1920*1080
double againValue = Math.min(1920.0 / height, 1080.0 / width);
surfaceView.getLayoutParams().width = (int) (width * againValue);
surfaceView.getLayoutParams().height = (int) (height * againValue);
} catch (Exception ex) {
Logger.e(TAG_NAME, "屏保文件解析错误：" + ex.getMessage());
} finally {
mmr.release();
}
}
}
activity_screen_saver.xml
3.效果图
资源集合中第一个元素是mp3视频，就会执行视频轮播，如果不是mp3视频，就会当做图片轮廓，不支持混合轮播，不过稍微改动下也是可以支持的。
Screenshot from 2019-09-27 09:58:04.png
Screenshot from 2019-09-27 09:58:29.png
4.后记
banner的详细链接：https://github.com/youth5201314/banner