204
技術社區[雲棲]
android捕獲程序異常退出
今天看到迅雷動漫裏麵一個CrashHandler 的類，我猜是崩潰處理類。進去一看，果然。順便學習一下。
Android係統的“程序異常退出”，給應用的用戶體驗造成不良影響。為了捕獲應用運行時異常並給出友好提示，便可繼承UncaughtExceptionHandler類來處理。通過Thread.setDefaultUncaughtExceptionHandler()方法將異常處理類設置到線程上即可。
代碼：
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);
}
}
}
兩個可以看的參考：
https://blog.csdn.net/hehe9737/article/details/7662123
https://blog.csdn.net/wangbole/article/details/8161524
代碼是自己的，雖然簡單，算我是原創吧。不然，真的很難裝逼。
最後更新：2017-04-03 05:40:10