Guard against getRunningAppProcesses() returning null

This commit is contained in:
Peter Serwylo 2016-10-13 06:22:15 +11:00
parent e2e1d3111c
commit 0e70495046

View File

@ -64,6 +64,7 @@ import java.net.URL;
import java.net.URLStreamHandler;
import java.net.URLStreamHandlerFactory;
import java.security.Security;
import java.util.List;
import java.util.Locale;
import info.guardianproject.netcipher.NetCipher;
@ -313,17 +314,28 @@ public class FDroidApp extends Application {
}
/**
* Asks if the current process is "org.fdroid.fdroid:acra". Note that it is not perfect, because
* some devices seem to not provide a list of running app processes when asked.
* Asks if the current process is "org.fdroid.fdroid:acra".
*
* The `android:process` statement in AndroidManifest.xml causes another process to be created
* to run {@link org.fdroid.fdroid.acra.CrashReportActivity}. This was causing lots of things
* to be started/run twice including {@link CleanCacheService} and {@link WifiStateChangeService}.
* This is helpful for bailing out of the {@link FDroidApp#onCreate} method early, preventing
* problems that arise from executing the code twice. This happens due to the `android:process`
* statement in AndroidManifest.xml causes another process to be created to run
* {@link org.fdroid.fdroid.acra.CrashReportActivity}. This was causing lots of things to be
* started/run twice including {@link CleanCacheService} and {@link WifiStateChangeService}.
*
* Note that it is not perfect, because some devices seem to not provide a list of running app
* processes when asked. In such situations, F-Droid may regress to the behaviour where some
* services may run twice and thus cause weirdness or slowness. However that is probably better
* for end users than experiencing a deterministic crash every time F-Droid is started.
*/
private boolean isAcraProcess() {
int pid = android.os.Process.myPid();
ActivityManager manager = (ActivityManager) this.getSystemService(Context.ACTIVITY_SERVICE);
for (RunningAppProcessInfo processInfo : manager.getRunningAppProcesses()) {
List<RunningAppProcessInfo> processes = manager.getRunningAppProcesses();
if (processes == null) {
return false;
}
int pid = android.os.Process.myPid();
for (RunningAppProcessInfo processInfo : processes) {
if (processInfo.pid == pid && "org.fdroid.fdroid:acra".equals(processInfo.processName)) {
return true;
}