Catch all type exceptions programming Android

转：http://stackoverflow.com/questions/5773993/catch-all-type-exceptions-programming-android

Q：

I'm developing an application for Android OS. Since this is my first application, I think I've committed some programming mistakes cause I hardly can trace bugs back to their causes. Thus, I was guessing, while i'm trying to fix bugs, is there a way to catch ALL types of exception in my entire activity lifecycle with one try-catch?

That would be awesome, i'm getting bored watching my galaxy S say :"Sorry the application App has stopped unexpectly" :(

A：

You can use an UncaughtExceptionHandler to possibly prevent some crashes. I use one, but only to print stack traces to a file, for when I'm debugging an app on a phone away from my computer. But I pass on the uncaught exception to the default Android UncaughtExceptionHandler after I've done that, because I want Android to be able to handle it correctly, and give the user the opportunity to send me a stack trace.

Code：

import java.io.FileOutputStream;import java.io.IOException;import android.app.Activity;import android.content.Context;public class SRSDexception implements Thread.UncaughtExceptionHandler {private Thread.UncaughtExceptionHandler defaultUEH;private Activity app = null;public SRSDexception(Activity app) {this.defaultUEH = Thread.getDefaultUncaughtExceptionHandler();    this.app = app;}public void uncaughtException(Thread t, Throwable e) {   StackTraceElement[] arr = e.getStackTrace();String Raghav =t.toString();String report = e.toString()+"\n\n";report += "--------- Stack trace ---------\n\n"+Raghav;for (int i=0; i<arr.length; i++){report += "    "+arr[i].toString()+"\n";}report += "-------------------------------\n\n";// If the exception was thrown in a background thread inside// AsyncTask, then the actual exception can be found with getCausereport += "--------- Cause ---------\n\n";Throwable cause = e.getCause();if(cause != null) {report += cause.toString() + "\n\n";arr = cause.getStackTrace();for (int i=0; i<arr.length; i++){report += "    "+arr[i].toString()+"\n";}}report += "-------------------------------\n\n";try {FileOutputStream trace = app.openFileOutput("stack.trace", Context.MODE_PRIVATE);trace.write(report.getBytes());trace.close();} catch(IOException ioe) {// ...}defaultUEH.uncaughtException(t, e);}}