Saves app crashes logs to any SDCard folder in Android

/* In the calling activity class copy inside this onCreate() method */ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (!(Thread.getDefaultUncaughtExceptionHandler() instanceof CustomExceptionHandler)) { Thread.setDefaultUncaughtExceptionHandler(new CustomExceptionHandler(this)); } } /* =====================================================================================*/ /* */ package com.myapp.exception; import android.content.Context; import android.content.Intent; import; import android.os.Environment; import; import; import; import; import; import; import; import java.text.SimpleDateFormat; import java.util.Date; public final class CustomExceptionHandler implements Thread.UncaughtExceptionHandler { private final Thread.UncaughtExceptionHandler defaultUEH; private final Context context; private final String sdCardPath = Environment.getExternalStorageDirectory().getAbsolutePath(); private static final SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss"); private static final String TAG = CustomExceptionHandler.class.getSimpleName(); public CustomExceptionHandler(final Context context) { this.context = context.getApplicationContext(); this.defaultUEH = Thread.getDefaultUncaughtExceptionHandler(); } @Override public void uncaughtException(Thread thread, Throwable ex) { final Writer result = new StringWriter(); final PrintWriter printWriter = new PrintWriter(result); ex.printStackTrace(printWriter); String stacktrace = result.toString(); printWriter.close(); String dirPath = sdCardPath + File.separator + "MyAppName" + File.separator; String filePath = sdf.format(new Date()) + ".txt"; write(stacktrace, dirPath, filePath); add(dirPath + filePath); defaultUEH.uncaughtException(thread, ex); } /** * Write Exception * * @param log String * @param dirPath String * @param filePath String */ private void write(final String log, final String dirPath, final String filePath) { try { File dir = new File(dirPath); if (!dir.exists()) { dir.mkdirs(); } File file = new File(dir, filePath); if (file.exists()) { file.delete(); } else { file.createNewFile(); file.setWritable(true, false); } BufferedWriter bos = new BufferedWriter(new FileWriter(file, true)); bos.write(log + "\n"); bos.flush(); bos.close(); } catch (IOException e) { e.printStackTrace(); } } /** * ACTION_MEDIA_SCANNER_SCAN_FILE * * @param path String */ private void add(final String path) { Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE); File f = new File(path); Uri contentUri = Uri.fromFile(f); mediaScanIntent.setData(contentUri); context.sendBroadcast(mediaScanIntent); } }
One of the best snippets ever found to create an Android Custom Exception Handler that saves error logs to a prefered folder in device's SDCard.

#excepton #handler #custom #android


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