将导致程序崩溃的堆栈调用Log写入文件，便于收集bug。在调试安卓程序，由于某些原因调试时手机不能连接PC端，无法通过IDE查看程序崩溃的Log，希望log能够写入文件中，对于已经发布的App可以通过该功能收集Bug。
01import java.io.FileNotFoundException;
02import java.io.FileOutputStream;
03import java.io.IOException;
04import java.io.PrintStream;
05import java.lang.Thread.UncaughtExceptionHandler;
06
07public class MyCrashHandler implements UncaughtExceptionHandler{
08
09 private static MyCrashHandler crashHandler;
10
11 @Override
12 public void uncaughtException(Thread thread, Throwable ex) {
13 // TODO Auto-generated method stub
14 if (crashHandler != null) {
16 //将crash log写入文件
17 FileOutputStream fileOutputStream = new FileOutputStream("/mnt/sdcard/crash_log.txt", true);
18 PrintStream printStream = new PrintStream(fileOutputStream);
19 ex.printStackTrace(printStream);
20 printStream.flush();
21 printStream.close();
22 fileOutputStream.close();
23 } catch (FileNotFoundException e) {
24 // TODO Auto-generated catch block
25 e.printStackTrace();
26 } catch (IOException e) {
27 // TODO Auto-generated catch block
28 e.printStackTrace();
29 }
30 }
31 }
32
33 //设置默认处理器
34 public void init() {
35 Thread.setDefaultUncaughtExceptionHandler(this);
36 }http://www.huiyi8.com/vi/
37
38 private MyCrashHandler() {}
39
40 //单例
41 public static MyCrashHandler instance() {
42 if (crashHandler == null) {
43 synchronized (crashHandler) {
44 crashHandler = new MyCrashHandler();
45 }
46 }
47 return crashHandler;
48 }
49}
