Android实战Android中处理崩溃异常 _Android实战

古之立大事者，不惟有超世之才，亦必有坚忍不拔之志。这篇文章主要讲述Android实战Android中处理崩溃异常相关的知识，希望能为你提供帮助。

public class MainActivity extends ActionBarActivity { public CrashApplication application; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); application = (CrashApplication) getApplication(); application.addAct(this); Button button = null; button.setOnClickListener(new OnClickListener() {@Override public void onClick(View v) { // TODO Auto-generated method stub} }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in androidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } }

public class CrashApplication extends Application { List< Activity> activityList = new ArrayList< Activity> (); @Override public void onCreate() { super.onCreate(); CrashHandler crashHandler = CrashHandler.getInstance(); crashHandler.init(getApplicationContext()); } public void addAct(Activity a) { activityList.add(a); } public void delAct(Activity a) { activityList.remove(a); } public void finishActs() { for (Activity a : activityList) { if (null != a) { a.finish(); } } android.os.Process.killProcess(android.os.Process.myPid()); } }

public class CrashHandler implements UncaughtExceptionHandler { public static final String TAG = "CrashHandler"; // 系统默认的UncaughtException处理类 private Thread.UncaughtExceptionHandler mDefaultHandler; // CrashHandler实例 private static CrashHandler INSTANCE = new CrashHandler(); // 程序的Context对象 private Context mContext; // 用来存储设备信息和异常信息 private Map< String, String> infos = new HashMap< String, String> (); // 用于格式化日期,作为日志文件名称的一部分 private SimpleDateFormat formatter = new SimpleDateFormat( "yyyy-MM-dd-HH-mm-ss"); /** 保证仅仅有一个CrashHandler实例 */ private CrashHandler() { } /** 获取CrashHandler实例 ,单例模式 */ public static CrashHandler getInstance() { return INSTANCE; } /** * 初始化 * * @param context */ public void init(Context context) { mContext = context; // 获取系统默认的UncaughtException处理器 mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler(); // 设置该CrashHandler为程序的默认处理器 Thread.setDefaultUncaughtExceptionHandler(this); } /** * 当UncaughtException发生时会转入该函数来处理 */ @Override public void uncaughtException(Thread thread, Throwable ex) { if (!handleException(ex) & & mDefaultHandler != null) { // 假设用户没有处理则让系统默认的异常处理器来处理 mDefaultHandler.uncaughtException(thread, ex); try { Thread.sleep(3000); } catch (InterruptedException e) { Log.e(TAG, "error : ", e); } // 退出程序 android.os.Process.killProcess(android.os.Process.myPid()); System.exit(1); } else { try { Thread.sleep(3000); } catch (InterruptedException e) { Log.e(TAG, "error : ", e); } // 退出程序((CrashApplication) mContext).finishActs(); } ; } /** * 自己定义错误处理,收集错误信息发送错误报告等操作均在此完毕. * * @param ex * @return true:假设处理了该异常信息; 否则返回false. */ private boolean handleException(Throwable ex) { if (ex == null) { return false; } // 使用Toast来显示异常信息 new Thread() { @Override public void run() { Looper.prepare(); Toast.makeText(mContext, "非常抱歉,程序出现异常,即将退出.", Toast.LENGTH_LONG) .show(); Looper.loop(); } }.start(); // 收集设备參数信息 collectDeviceInfo(mContext); // 保存日志文件 saveCrashInfo2File(ex); return true; } /** * 收集设备參数信息 * * @param ctx */ public void collectDeviceInfo(Context ctx) { try { PackageManager pm = ctx.getPackageManager(); PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES); if (pi != null) { String versionName = pi.versionName == null ?
"null" : pi.versionName; String versionCode = pi.versionCode + ""; infos.put("versionName", versionName); infos.put("versionCode", versionCode); } } catch (NameNotFoundException e) { Log.e(TAG, "an error occured when collect package info", e); } Field[] fields = Build.class.getDeclaredFields(); for (Field field : fields) { try { field.setAccessible(true); infos.put(field.getName(), field.get(null).toString()); Log.d(TAG, field.getName() + " : " + field.get(null)); } catch (Exception e) { Log.e(TAG, "an error occured when collect crash info", e); } } } /** * 保存错误信息到文件里 * * @param ex * @return 返回文件名称称,便于将文件传送到server */ private String saveCrashInfo2File(Throwable ex) {StringBuffer sb = new StringBuffer(); for (Map.Entry< String, String> entry : infos.entrySet()) { String key = entry.getKey(); String value = https://www.songbingjia.com/android/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 { long timestamp = System.currentTimeMillis(); String time = formatter.format(new Date()); String fileName = "crash-" + time + "-" + timestamp + ".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); fos.write(sb.toString().getBytes()); fos.close(); } return fileName; } catch (Exception e) { Log.e(TAG, "an error occured while writing file...", e); } return null; } }

【Android实战Android中处理崩溃异常】