Java AndroidUtil类代码示例

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
@Override
@MainThread
public void detachViews() {
    if (mSurfacesState.get() == SURFACE_STATE_INIT)
        return;

    mSurfacesState.set(SURFACE_STATE_INIT);
    mHandler.removeCallbacksAndMessages(null);
    synchronized (mNativeLock) {
        mOnNewVideoLayoutListener = null;
        mNativeLock.buffersGeometryAbort = true;
        mNativeLock.notifyAll();
    }
    for (int id = 0; id < ID_MAX; ++id) {
        final SurfaceHelper surfaceHelper = mSurfaceHelpers[id];
        if (surfaceHelper != null)
            surfaceHelper.release();
        mSurfaceHelpers[id] = null;
    }
    for (IVLCVout.Callback cb : mIVLCVoutCallbacks)
        cb.onSurfacesDestroyed(this);
    if (mSurfaceCallback != null)
        mSurfaceCallback.onSurfacesDestroyed(this);
    if (AndroidUtil.isJellyBeanOrLater)
        mSurfaceTextureThread.release();
}
 

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
public ArrayList<AudioBrowserListAdapter.ListItem> getPlaylistDbItems() {
    ArrayList<AudioBrowserListAdapter.ListItem> playlistItems = new ArrayList<AudioBrowserListAdapter.ListItem>();
    AudioBrowserListAdapter.ListItem playList;
    MediaDatabase db = MediaDatabase.getInstance();
    String[] items, playlistNames = db.getPlaylists();
    for (String playlistName : playlistNames){
        items = db.playlistGetItems(playlistName);
        if (items == null)
            continue;
        playList = new AudioBrowserListAdapter.ListItem(playlistName, null, null, false);
        for (String track : items){
            playList.mMediaList.add(new MediaWrapper(AndroidUtil.LocationToUri(track)));
        }
        playlistItems.add(playList);
    }
    return playlistItems;
}
 

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public static boolean deleteFile (String path){
    boolean deleted = false;
    path = Uri.decode(Strings.removeFileProtocole(path));
    //Delete from Android Medialib, for consistency with device MTP storing and other apps listing content:// media
    if (AndroidUtil.isHoneycombOrLater()){
        ContentResolver cr = VLCApplication.getAppContext().getContentResolver();
        String[] selectionArgs = { path };
        deleted = cr.delete(MediaStore.Files.getContentUri("external"),
                MediaStore.Files.FileColumns.DATA + "=?", selectionArgs) > 0;
    }
    File file = new File(path);
    if (file.exists())
        deleted |= file.delete();
    return deleted;
}
 

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
private BitmapCache() {

    // Get memory class of this device, exceeding this amount will throw an
    // OutOfMemory exception.
    final ActivityManager am = ((ActivityManager) VLCApplication.getAppContext().getSystemService(
            Context.ACTIVITY_SERVICE));
    final int memClass = AndroidUtil.isHoneycombOrLater() ? am.getLargeMemoryClass() : am.getMemoryClass();

    // Use 1/5th of the available memory for this memory cache.
    final int cacheSize = 1024 * 1024 * memClass / 5;

    Log.d(TAG, "LRUCache size sets to " + cacheSize);

    mMemCache = new LruCache<String, Bitmap>(cacheSize) {

        @Override
        protected int sizeOf(String key, Bitmap value) {
            return value.getRowBytes() * value.getHeight();
        }

    };
}
 

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
/** Create menu from XML
 */
@TargetApi(Build.VERSION_CODES.FROYO)
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    mMenu = menu;
    /* Note: on Android 3.0+ with an action bar this method
     * is called while the view is created. This can happen
     * any time after onCreate.
     */
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.media_library, menu);

    if (AndroidUtil.isFroyoOrLater()) {
        SearchManager searchManager =
                (SearchManager) VLCApplication.getAppContext().getSystemService(Context.SEARCH_SERVICE);
        mSearchView = (SearchView) MenuItemCompat.getActionView(menu.findItem(R.id.ml_menu_search));
        mSearchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
        mSearchView.setQueryHint(getString(R.string.search_hint));
        SearchSuggestionsAdapter searchSuggestionsAdapter = new SearchSuggestionsAdapter(this, null);
        searchSuggestionsAdapter.setFilterQueryProvider(this);
        mSearchView.setSuggestionsAdapter(searchSuggestionsAdapter);
    } else
        menu.findItem(R.id.ml_menu_search).setVisible(false);
    return super.onCreateOptionsMenu(menu);
}
 

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public void onPopupMenu(View anchor, final int position) {
    if (!AndroidUtil.isHoneycombOrLater()) {
        // Call the "classic" context menu
        anchor.performLongClick();
        return;
    }
    PopupMenu popupMenu = new PopupMenu(getActivity(), anchor);
    setContextMenu(popupMenu.getMenuInflater(), popupMenu.getMenu(), position);

    popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem item) {
            return handleContextItemSelected(item, position);
        }
    });
    popupMenu.show();
}
 

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
@Override
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public void onPopupMenu(View anchor, final int position) {
    if (!AndroidUtil.isHoneycombOrLater()) {
        // Call the "classic" context menu
        anchor.performLongClick();
        return;
    }

    PopupMenu popupMenu = new PopupMenu(getActivity(), anchor);
    popupMenu.getMenuInflater().inflate(R.menu.audio_list_browser, popupMenu.getMenu());
    setContextMenuItems(popupMenu.getMenu(), anchor, position);

    popupMenu.setOnMenuItemClickListener(new OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem item) {
            return handleContextItemSelected(item, position);
        }
    });
    popupMenu.show();
}
 

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
@Override
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public void onPopupMenu(View anchor, final int position) {
    if (!AndroidUtil.isHoneycombOrLater()) {
        // Call the "classic" context menu
        anchor.performLongClick();
        return;
    }

    PopupMenu popupMenu = new PopupMenu(getActivity(), anchor);
    popupMenu.getMenuInflater().inflate(R.menu.audio_list_browser, popupMenu.getMenu());
    setContextMenuItems(popupMenu.getMenu(), anchor, position);

    popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem item) {
            return handleContextItemSelected(item, position);
        }
    });
    popupMenu.show();
}
 

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
@SuppressLint("NewApi")
public static void prepareCacheFolder(Context context) {
    try {
        if (AndroidUtil.isFroyoOrLater() && AndroidDevices.hasExternalStorage() && context.getExternalCacheDir() != null)
            CACHE_DIR = context.getExternalCacheDir().getPath();
        else
            CACHE_DIR = AndroidDevices.EXTERNAL_PUBLIC_DIRECTORY + "/Android/data/" + BuildConfig.APPLICATION_ID + "/cache";
    } catch (Exception e) { // catch NPE thrown by getExternalCacheDir()
        CACHE_DIR = AndroidDevices.EXTERNAL_PUBLIC_DIRECTORY + "/Android/data/" + BuildConfig.APPLICATION_ID + "/cache";
    }
    ART_DIR = CACHE_DIR + "/art/";
    COVER_DIR = CACHE_DIR + "/covers/";
    PLAYLIST_DIR = CACHE_DIR + "/playlists/";

    for(String path : Arrays.asList(ART_DIR, COVER_DIR)) {
        File file = new File(path);
        if (!file.exists())
            file.mkdirs();
    }
}
 

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
@Override
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public void onPopupMenu(View anchor, final int position) {
    if (!AndroidUtil.isHoneycombOrLater()) {
        // Call the "classic" context menu
        anchor.performLongClick();
        return;
    }

    PopupMenu popupMenu = new PopupMenu(getActivity(), anchor);
    popupMenu.getMenuInflater().inflate(R.menu.audio_list_browser, popupMenu.getMenu());
    setContextMenuItems(popupMenu.getMenu(), anchor);

    popupMenu.setOnMenuItemClickListener(new OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem item) {
            return handleContextItemSelected(item, position);
        }
    });
    popupMenu.show();
}
 

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public void onContextPopupMenu(View anchor, final int position) {
    if (!AndroidUtil.isHoneycombOrLater()) {
        // Call the "classic" context menu
        anchor.performLongClick();
        return;
    }

    PopupMenu popupMenu = new PopupMenu(getActivity(), anchor);
    popupMenu.getMenuInflater().inflate(R.menu.video_list, popupMenu.getMenu());
    MediaWrapper media = mVideoAdapter.getItem(position);
    if (media == null)
        return;
    setContextMenuItems(popupMenu.getMenu(), media);
    popupMenu.setOnMenuItemClickListener(new OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem item) {
            return handleContextItemSelected(item, position);
        }
    });
    popupMenu.show();
}
 

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
@TargetApi(android.os.Build.VERSION_CODES.FROYO)
private void initBrightnessTouch() {
    float brightnesstemp = 0.6f;
    // Initialize the layoutParams screen brightness
    try {
        if (AndroidUtil.isFroyoOrLater() &&
                Settings.System.getInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE) == Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC) {
            Settings.System.putInt(getContentResolver(),
                    Settings.System.SCREEN_BRIGHTNESS_MODE,
                    Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);
            mRestoreAutoBrightness = android.provider.Settings.System.getInt(getContentResolver(),
                    android.provider.Settings.System.SCREEN_BRIGHTNESS) / 255.0f;
        } else {
            brightnesstemp = android.provider.Settings.System.getInt(getContentResolver(),
                android.provider.Settings.System.SCREEN_BRIGHTNESS) / 255.0f;
        }
    } catch (SettingNotFoundException e) {
        e.printStackTrace();
    }
    WindowManager.LayoutParams lp = getWindow().getAttributes();
    lp.screenBrightness = brightnesstemp;
    getWindow().setAttributes(lp);
    mIsFirstBrightnessGesture = false;
}
 

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
/**
 * A function to control the Remote Control Client. It is needed for
 * compatibility with devices below Ice Cream Sandwich (4.0).
 *
 * @param state Playback state
 */
@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
private void setRemoteControlClientPlaybackState(int state) {
    if (!AndroidUtil.isICSOrLater() || mRemoteControlClient == null)
        return;

    switch (state) {
        case MediaPlayer.Event.Playing:
            mRemoteControlClient.setPlaybackState(RemoteControlClient.PLAYSTATE_PLAYING);
            break;
        case MediaPlayer.Event.Paused:
            mRemoteControlClient.setPlaybackState(RemoteControlClient.PLAYSTATE_PAUSED);
            break;
        case MediaPlayer.Event.Stopped:
            mRemoteControlClient.setPlaybackState(RemoteControlClient.PLAYSTATE_STOPPED);
            break;
    }
}
 

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
@TargetApi(Build.VERSION_CODES.KITKAT)
static boolean canUseForInBitmap(
        Bitmap candidate, BitmapFactory.Options targetOptions) {

    if (candidate == null)
        return false;

    if (AndroidUtil.isKitKatOrLater()) {
        if (targetOptions.inSampleSize == 0)
            return false;
        // From Android 4.4 (KitKat) onward we can re-use if the byte size of
        // the new bitmap is smaller than the reusable bitmap candidate
        // allocation byte count.
        int width = targetOptions.outWidth / targetOptions.inSampleSize;
        int height = targetOptions.outHeight /  targetOptions.inSampleSize;
        int byteCount = width * height * getBytesPerPixel(candidate.getConfig());
        return byteCount <= candidate.getAllocationByteCount();
    }

    // On earlier versions, the dimensions must match exactly and the inSampleSize must be 1
    return candidate.getWidth() == targetOptions.outWidth
            && candidate.getHeight() == targetOptions.outHeight
            && targetOptions.inSampleSize == 1;
}
 

import org.videolan.libvlc.util.AndroidUtil; //导入依赖的package包/类
private void setView(int id, TextureView view) {
    if (!AndroidUtil.isICSOrLater)
        throw new IllegalArgumentException("TextureView not implemented in this android version");
    ensureInitState();
    if (view == null)
        throw new NullPointerException("view is null");
    final SurfaceHelper surfaceHelper = mSurfaceHelpers[id];
    if (surfaceHelper != null)
        surfaceHelper.release();

    mSurfaceHelpers[id] = new SurfaceHelper(id, view);
}