源码片段
public class UncaughtException implements UncaughtExceptionHandler {
private final static String TAG = "UncaughtException";
private static UncaughtException mUncaughtException;
private Context context;
private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
// 用来存储设备信息和异常信息
private Map<string, string=""> infos = new HashMap<string, string="">();
public Context getContext() {
return context;
}
public void setContext(Context context) {
this.context = context;
}
private UncaughtException() {
// TODO Auto-generated constructor stub
}
/**
* 同步方法以免单例多线程环境下出现异常
*
* @return
*/
public synchronized static UncaughtException getInstance() {
if (mUncaughtException == null) {
mUncaughtException = new UncaughtException();
}
return mUncaughtException;
}
/**
* 初始化把当前对象设置成UncaughtExceptionHandler处理器
*/
public void init() {
Thread.setDefaultUncaughtExceptionHandler(mUncaughtException);
}
@Override
public void uncaughtException(Thread thread, Throwable ex) {
// TODO Auto-generated method stub
//处理异常,我们还可以把异常信息写入文件以供后来分析。
saveCrashInfo2File(ex);
Log.e(TAG, "uncaughtException thread : " + thread + "||name=" + thread.getName() + "||id=" + thread.getId() + "||exception=" + ex);
/* Looper.prepare();
Toast.makeText(context, "程序异常立即退出", 1).show();
System.exit(0);
Looper.loop();*/
showDialog() ;
}
private void showDialog() {
new Thread() {
@Override
public void run() {
Looper.prepare();
new AlertDialog.Builder(context).setTitle("泪奔提示").setCancelable(false).setMessage("大爷我崩溃了...")
.setNeutralButton("我知道了", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
System.exit(0);
}
}).create().show();
Looper.loop();
}
}.start();
}
/**
* 保存错误信息到文件中
*
* @param ex
* @return 返回文件名称,便于将文件传送到服务器
*/
private String saveCrashInfo2File(Throwable ex) {
StringBuffer sb = new StringBuffer();
long timestamp = System.currentTimeMillis();
String time = formatter.format(new Date());
sb.append("\n"+time+"----");
for (Map.Entry<string, string=""> entry : infos.entrySet()) {
String key = entry.getKey();
String value = entry.getValue();
sb.append(key + "=" + value + "\n");
}
Writer writer = new StringWriter();
PrintWriter printWriter = new PrintWriter(writer);
ex.printStackTrace(printWriter);
Throwable cause = ex.getCause();
while (cause != null) {
cause.printStackTrace(printWriter);
cause = cause.getCause();
}
printWriter.close();
String result = writer.toString();
sb.append(result);
try {
String fileName = "exception.log";
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
String path = "/sdcard/crash/";
File dir = new File(path);
if (!dir.exists()) {
dir.mkdirs();
}
FileOutputStream fos = new FileOutputStream(path + fileName,true);
fos.write(sb.toString().getBytes());
fos.close();
}
return fileName;
} catch (Exception e) {
Log.e(TAG, "an error occured while writing file...", e);
}
return null;
}
}</string,></string,></string,>
