Ответ 1
Кажется, что причина EFFECT_TYPE_EQUALIZER
. Прочтите этот Util, я думаю, это будет полезно для вас:
import android.annotation.TargetApi;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.media.MediaMetadataRetriever;
import android.media.audiofx.AudioEffect;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Build;
import com.marverenic.music.instances.Song;
import com.marverenic.music.player.PlayerController;
import java.util.UUID;
import timber.log.Timber;
import static android.content.Context.CONNECTIVITY_SERVICE;
public final class Util {
/**
* This UUID corresponds to the UUID of an Equalizer Audio Effect. It has been copied from
* {@link AudioEffect#EFFECT_TYPE_EQUALIZER} for backwards compatibility since this field was
* added in API level 18.
*/
private static final UUID EQUALIZER_UUID;
static {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
EQUALIZER_UUID = AudioEffect.EFFECT_TYPE_EQUALIZER;
} else {
EQUALIZER_UUID = UUID.fromString("0bed4300-ddd6-11db-8f34-0002a5d5c51b");
}
}
/**
* This class is never instantiated
*/
private Util() {
}
/**
* Checks whether the device is in a state where we're able to access the internet. If the
* device is not connected to the internet, this will return {@code false}. If the device is
* only connected to a mobile network, this will return {@code allowMobileNetwork}. If the
* device is connected to an active WiFi network, this will return {@code true.}
* @param context A context used to check the current network status
* @param allowMobileNetwork Whether or not the user allows the application to use mobile
* data. This is an internal implementation that is not enforced
* by the system, but is exposed to the user in our app settings.
* @return Whether network calls should happen in the current connection state or not
*/
@SuppressWarnings("SimplifiableIfStatement")
public static boolean canAccessInternet(Context context, boolean allowMobileNetwork) {
ConnectivityManager connectivityManager;
connectivityManager = (ConnectivityManager) context.getSystemService(CONNECTIVITY_SERVICE);
NetworkInfo info = connectivityManager.getActiveNetworkInfo();
if (info == null) {
// No network connections are active
return false;
} else if (!info.isAvailable() || info.isRoaming()) {
// The network isn't active, or is a roaming network
return false;
} else if (info.getType() == ConnectivityManager.TYPE_MOBILE) {
// If it a mobile network, return the user preference
return allowMobileNetwork;
} else {
// The network is a wifi network
return true;
}
}
@TargetApi(Build.VERSION_CODES.M)
public static boolean hasPermission(Context context, String permission) {
return context.checkSelfPermission(permission) == PackageManager.PERMISSION_GRANTED;
}
@TargetApi(Build.VERSION_CODES.M)
public static boolean hasPermissions(Context context, String... permissions) {
for (String permission : permissions) {
if (!hasPermission(context, permission)) {
return false;
}
}
return true;
}
public static Intent getSystemEqIntent(Context c) {
Intent systemEq = new Intent(AudioEffect.ACTION_DISPLAY_AUDIO_EFFECT_CONTROL_PANEL);
systemEq.putExtra(AudioEffect.EXTRA_PACKAGE_NAME, c.getPackageName());
systemEq.putExtra(AudioEffect.EXTRA_AUDIO_SESSION, PlayerController.getAudioSessionId());
ActivityInfo info = systemEq.resolveActivityInfo(c.getPackageManager(), 0);
if (info != null && !info.name.startsWith("com.android.musicfx")) {
return systemEq;
} else {
return null;
}
}
/**
* Checks whether the current device is capable of instantiating and using an
* {@link android.media.audiofx.Equalizer}
* @return True if an Equalizer may be used at runtime
*/
public static boolean hasEqualizer() {
for (AudioEffect.Descriptor effect : AudioEffect.queryEffects()) {
if (EQUALIZER_UUID.equals(effect.type)) {
return true;
}
}
return false;
}
public static Bitmap fetchFullArt(Song song) {
if (song == null) {
return null;
}
MediaMetadataRetriever retriever = new MediaMetadataRetriever();
try {
retriever.setDataSource(song.getLocation());
byte[] stream = retriever.getEmbeddedPicture();
if (stream != null) {
return BitmapFactory.decodeByteArray(stream, 0, stream.length);
}
} catch (Exception e) {
Timber.e(e, "Failed to load full song artwork");
}
return null;
}
}