Android系统的“程序异常退出”，给应用的用户体验造成不良影响。为了捕获应用运行时异常并给出友好提示，便可继承UncaughtExceptionHandler类来处理。通过Thread.setDefaultUncaughtExceptionHandler()方法将异常处理类设置到线程上即可。
1、异常处理类，代码如下：
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public class CrashHandler implements UncaughtExceptionHandler {
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public static final String TAG = "CrashHandler";
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private static CrashHandler INSTANCE = new CrashHandler();
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private Context mContext;
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private Thread.UncaughtExceptionHandler mDefaultHandler;
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private CrashHandler() {
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}
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public static CrashHandler getInstance() {
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return INSTANCE;
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}
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public void init(Context ctx) {
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mContext = ctx;
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mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
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Thread.setDefaultUncaughtExceptionHandler(this);
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}
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@Override
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public void uncaughtException(Thread thread, Throwable ex) {
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System.out.println("uncaughtException");
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new Thread() {
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@Override
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public void run() {
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Looper.prepare();
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new AlertDialog.Builder(mContext).setTitle("提示").setCancelable(false)
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.setMessage("程序崩溃了...").setNeutralButton("我知道了", new OnClickListener() {
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@Override
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public void onClick(DialogInterface dialog, int which) {
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System.exit(0);
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}
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})
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.create().show();
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Looper.loop();
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}
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}.start();
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}
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private boolean handleException(Throwable ex) {
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if (ex == null) {
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return true;
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}
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return true;
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}
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}
2、线程绑定异常处理类
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public class CrashHandlerActivity extends Activity {
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.main);
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CrashHandler crashHandler = CrashHandler.getInstance();
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crashHandler.init(this);
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throw new NullPointerException();
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}
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}
Demo下载地址：http://code.google.com/p/android-custom-view/downloads/list
转载地址: http://orgcent.com/android-uncaughtexceptionhandler-exception/
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Android 捕获系统全局异常
原文：http://blog.csdn.net/jecons/article/details/39290859
