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package cgeo.geocaching.utils;
import android.os.Environment;
import java.io.IOException;
import java.lang.Thread.UncaughtExceptionHandler;
public class OOMDumpingUncaughtExceptionHandler implements UncaughtExceptionHandler {
private UncaughtExceptionHandler defaultHandler = null;
private boolean defaultReplaced = false;
public static boolean activateHandler() {
final OOMDumpingUncaughtExceptionHandler handler = new OOMDumpingUncaughtExceptionHandler();
return handler.activate();
}
private boolean activate() {
defaultHandler = Thread.getDefaultUncaughtExceptionHandler();
// replace default handler if that has not been done already
if (!(defaultHandler instanceof OOMDumpingUncaughtExceptionHandler)) {
Thread.setDefaultUncaughtExceptionHandler(this);
defaultReplaced = true;
} else {
defaultHandler = null;
defaultReplaced = false;
}
return defaultReplaced;
}
public static boolean resetToDefault() {
boolean defaultResetted = false;
final UncaughtExceptionHandler unspecificHandler = Thread.getDefaultUncaughtExceptionHandler();
if (unspecificHandler instanceof OOMDumpingUncaughtExceptionHandler) {
final OOMDumpingUncaughtExceptionHandler handler = (OOMDumpingUncaughtExceptionHandler) unspecificHandler;
defaultResetted = handler.reset();
}
return defaultResetted;
}
private boolean reset() {
final boolean resetted = defaultReplaced;
if (defaultReplaced) {
Thread.setDefaultUncaughtExceptionHandler(defaultHandler);
defaultReplaced = false;
}
return resetted;
}
@Override
public void uncaughtException(final Thread thread, final Throwable ex) {
Log.e("UncaughtException", ex);
Throwable exx = ex;
while (exx.getCause() != null) {
exx = exx.getCause();
}
if (exx.getClass().equals(OutOfMemoryError.class)) {
try {
Log.e("OutOfMemory");
android.os.Debug.dumpHprofData(Environment.getExternalStorageDirectory().getPath() + "/dump.hprof");
} catch (final IOException e) {
Log.e("Error writing dump", e);
}
}
defaultHandler.uncaughtException(thread, ex);
}
}
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