android异常捕获不退出程序,android捕获程序异常退出

今天看到迅雷动漫里面一个CrashHandler 的类，我猜是崩溃处理类。进去一看，果然。顺便学习一下。

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。

代码：

public class CrashHandler implements UncaughtExceptionHandler {

private static final Logger LOG = Logger.getLogger(CrashHandler.class);

private final Application mApplication;

private Handler mUIHandler;

private Thread mUiThread;

public CrashHandler(Application app) {

mApplication = app;

mUIHandler = new Handler();

mUiThread = Thread.currentThread();

}

@Override

public void uncaughtException(Thread thread, Throwable e) {

LOG.error(e);

Throwable cause = e.getCause();

while (cause != null) {

LOG.error(cause);

cause = cause.getCause();

}

writeCrashInfoToFile(e);

if (Thread.currentThread() != mUiThread) {

mUIHandler.post(new Runnable() {

@Override

public void run() {

mApplication.onTerminate();

}

});

} else {

mApplication.onTerminate();

}

}

private void writeCrashInfoToFile(Throwable t) {

StringWriter sw = new StringWriter();

PrintWriter pw = new PrintWriter(sw);

t.printStackTrace(pw);

Throwable cause = t.getCause();

while (cause != null) {

cause.printStackTrace(pw);

cause = cause.getCause();

}

String crashInfo = sw.toString();

pw.close();

try {

if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {

File file = mApplication.getApplicationContext().getExternalCacheDir();

if (file != null) {

file = FileUtils.getFile(file, "crash");

file.mkdirs();

FileUtils.writeStringToFile(FileUtils.getFile(file, "crash.log"), crashInfo);

}

}

} catch (IOException e) {

LOG.warn(e);

}

}

}两个可以看的参考：

代码是自己的，虽然简单，算我是原创吧。不然，真的很难装逼。