OOMDumpingUncaughtExceptionHandler.java

package cgeo.geocaching.utils;

import android.os.Environment;

import java.io.IOException;
import java.lang.Thread.UncaughtExceptionHandler;

import org.apache.commons.lang3.StringUtils;

public final class OOMDumpingUncaughtExceptionHandler {

    private OOMDumpingUncaughtExceptionHandler() {
        // utility class
    }

    public static void installUncaughtExceptionHandler() {
        final UncaughtExceptionHandler previousHandler = Thread.getDefaultUncaughtExceptionHandler();
        Thread.setDefaultUncaughtExceptionHandler(new UncaughtExceptionHandler() {
            @Override
            public void uncaughtException(final Thread thread, final Throwable ex) {
                // OkHttp threads can be interrupted when a request cancellation occurs, this should
                // be ignored.
                if (StringUtils.startsWith(thread.getName(), "OkHttp ")) {
                    return;
                }

                // If debug is enabled, log the exception
                if (Log.isDebug()) {
                    Log.w("UncaughtException", ex);
                    Throwable exx = ex;
                    while (exx.getCause() != null) {
                        exx = exx.getCause();
                    }
                    if (exx.getClass().equals(OutOfMemoryError.class)) {
                        try {
                            Log.w("OutOfMemory");
                            android.os.Debug.dumpHprofData(Environment.getExternalStorageDirectory().getPath() + "/dump.hprof");
                        } catch (final IOException e) {
                            Log.w("Error writing dump", e);
                        }
                    }
                }

                // Call the default handler
                if (previousHandler != null) {
                    previousHandler.uncaughtException(thread, ex);
                }
            }
        });
    }

}