Android 手动抓Crash日志

public class CrashHandler implements Thread.UncaughtExceptionHandler { private static final String FILE_NAME = "crash"; private static final String FILE_NAME_SUFFIX = ".trace"; private static CrashHandler ch = new CrashHandler(); private Thread.UncaughtExceptionHandler mDefaulCrashHandler; private Context mContext; private SimpleDateFormat mSdf; private CrashHandler() { } public static CrashHandler getInstance() { return ch; } public void init(Context context) { mDefaulCrashHandler = Thread.getDefaultUncaughtExceptionHandler(); Thread.setDefaultUncaughtExceptionHandler(this); mContext = context.getApplicationContext(); mSdf = (SimpleDateFormat) SimpleDateFormat.getInstance(); mSdf.applyPattern("yyyy-MM-dd HH:mm:ss"); } @Override public void uncaughtException(Thread t, Throwable e) { try { dumpException(e); uploadExceptionToServer(); } catch (IOException e1) { e1.printStackTrace(); } e.printStackTrace(); if (mDefaulCrashHandler != null) mDefaulCrashHandler.uncaughtException(t, e); else Process.killProcess(Process.myPid()); } private void dumpException(Throwable ex) throws IOException { String path = null; if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState()) || !Environment.isExternalStorageRemovable()) path = mContext.getExternalFilesDir(null).getAbsolutePath() + "/crash/log"; else path = mContext.getFilesDir().getAbsolutePath() + "/crash/log"; File dir = new File(path); if (!dir.exists()) dir.mkdirs(); long current = System.currentTimeMillis(); String time = mSdf.format(current); File file = new File(path + File.separator + FILE_NAME + time + FILE_NAME_SUFFIX); try { PrintWriter pw = new PrintWriter(new BufferedWriter(new FileWriter(file))); pw.println(time); dumpPhoneInfo(pw); pw.println(); ex.printStackTrace(pw); pw.close(); } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } } private void dumpPhoneInfo(PrintWriter pw) throws PackageManager.NameNotFoundException { PackageManager pm = mContext.getPackageManager(); PackageInfo pi = pm.getPackageInfo(mContext.getPackageName(), PackageManager.GET_ACTIVITIES); pw.print("App Version: "); pw.print(pi.versionName); pw.print('_'); pw.println(pi.versionCode); //Android版本号 pw.print("OS Version: "); pw.print(Build.VERSION.RELEASE); pw.print('_'); pw.println(Build.VERSION.SDK_INT); //手机制造商 pw.print("Vendor: "); pw.println(Build.MANUFACTURER); //手机型号 pw.print("Model: "); pw.println(Build.MODEL); //CPU架构 pw.print("CPU ABI: "); pw.println(Build.CPU_ABI); } private void uploadExceptionToServer() { } }

当你的程序崩溃时，会在你的/data/data/你的程序目录/files/crash/log目录中生成崩溃日志，记得加读写权限哦.

1.我们先在Application里面初始化一下

2.然后随便触发一个bug 这里大家可以看到，点击按钮后就程序会崩溃，会报一个数组越界异常.

3.我们来验证一下，看在/data/data/你的程序目录/files/crash/log中是否会生成崩溃日. 日志是生成了,我们在看看里面到底是不是数组越界异常. 看到了吧，确实也是数组越界异常，说明捕获崩溃成功.