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Code Issues Projects Releases Wiki Activity

Clear the UI when memory is critically low.

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This commit is contained in:
akwizgran
2018-05-04 12:04:13 +01:00
parent 0e9af1d993
commit 6da45a4585
2 changed files with 34 additions and 31 deletions
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61
briar-android/src/main/java/org/briarproject/briar/android/BriarService.java
View File

@@ -22,7 +22,6 @@ import org.briarproject.bramble.api.system.AndroidExecutor;
import org.briarproject.briar.R;
import org.briarproject.briar.android.logout.HideUiActivity;
import org.briarproject.briar.android.navdrawer.NavDrawerActivity;
import org.briarproject.briar.android.splash.SplashScreenActivity;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicBoolean;
@@ -44,6 +43,7 @@ import static android.os.Build.VERSION.SDK_INT;
import static android.support.v4.app.NotificationCompat.CATEGORY_SERVICE;
import static android.support.v4.app.NotificationCompat.PRIORITY_MIN;
import static android.support.v4.app.NotificationCompat.VISIBILITY_SECRET;
import static java.util.logging.Level.INFO;
import static java.util.logging.Level.WARNING;
import static org.briarproject.bramble.api.lifecycle.LifecycleManager.StartResult.ALREADY_RUNNING;
import static org.briarproject.bramble.api.lifecycle.LifecycleManager.StartResult.SUCCESS;
@@ -218,21 +218,47 @@ public class BriarService extends Service {
}
@Override
public void onLowMemory() {
super.onLowMemory();
LOG.warning("Memory is low");
public void onTrimMemory(int level) {
super.onTrimMemory(level);
if (level == TRIM_MEMORY_UI_HIDDEN) {
LOG.info("Trim memory: UI hidden");
} else if (level == TRIM_MEMORY_BACKGROUND) {
LOG.info("Trim memory: added to LRU list");
} else if (level == TRIM_MEMORY_MODERATE) {
LOG.info("Trim memory: near middle of LRU list");
} else if (level == TRIM_MEMORY_COMPLETE) {
LOG.info("Trim memory: near end of LRU list");
} else if (SDK_INT >= 16) {
if (level == TRIM_MEMORY_RUNNING_MODERATE) {
LOG.info("Trim memory: running moderately low");
} else if (level == TRIM_MEMORY_RUNNING_LOW) {
LOG.info("Trim memory: running low");
} else if (level == TRIM_MEMORY_RUNNING_CRITICAL) {
LOG.info("Trim memory: running critically low");
// Clear the UI to save some memory
hideUi();
} else if (LOG.isLoggable(INFO)) {
LOG.info("Trim memory: unknown level " + level);
}
} else if (LOG.isLoggable(INFO)) {
LOG.info("Trim memory: unknown level " + level);
}
}
private void shutdownFromBackground() {
// Stop the service
stopSelf();
// Hide the UI
private void hideUi() {
Intent i = new Intent(this, HideUiActivity.class);
i.addFlags(FLAG_ACTIVITY_NEW_TASK
| FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS
| FLAG_ACTIVITY_NO_ANIMATION
| FLAG_ACTIVITY_CLEAR_TASK);
startActivity(i);
}
private void shutdownFromBackground() {
// Stop the service
stopSelf();
// Hide the UI
hideUi();
// Wait for shutdown to complete, then exit
new Thread(() -> {
try {
@@ -245,25 +271,6 @@ public class BriarService extends Service {
}).start();
}
// TODO: Remove if low memory shutdowns are not appropriate
private void showLowMemoryShutdownNotification() {
androidExecutor.runOnUiThread(() -> {
NotificationCompat.Builder b = new NotificationCompat.Builder(
BriarService.this, FAILURE_CHANNEL_ID);
b.setSmallIcon(android.R.drawable.stat_notify_error);
b.setContentTitle(getText(
R.string.low_memory_shutdown_notification_title));
b.setContentText(getText(
R.string.low_memory_shutdown_notification_text));
Intent i = new Intent(this, SplashScreenActivity.class);
b.setContentIntent(PendingIntent.getActivity(this, 0, i, 0));
b.setAutoCancel(true);
Object o = getSystemService(NOTIFICATION_SERVICE);
NotificationManager nm = (NotificationManager) o;
nm.notify(FAILURE_NOTIFICATION_ID, b.build());
});
}
/**
* Waits for all services to start before returning.
*/

4
briar-android/src/main/res/values/strings.xml
View File

@@ -421,8 +421,4 @@
<string name="permission_camera_denied_toast">Camera permission was not granted</string>
<string name="qr_code">QR code</string>
<string name="show_qr_code_fullscreen">Show QR code fullscreen</string>
<!-- Low Memory Notification -->
<string name="low_memory_shutdown_notification_title">Signed out of Briar</string>
<string name="low_memory_shutdown_notification_text">Signed out due to lack of memory.</string>
</resources>