全局异常捕获，上传服务器

1.思路：在奔溃的时候，保存在本地，第二次登录的时候，将上次的bug信息取出，上传服务器，然后删除本地的bug信息

2.实现：

一：MobileApplication的onCreate()里面：

//全局异常捕获CrashHandler crashHandler = CrashHandler.getInstance();crashHandler.init(getApplicationContext());

二：CrashHandler（其中保存数据放在StringBuffer里面，含有map的拼接，效率高于String）：

package com.diandian.crash;import java.io.PrintWriter;import java.io.StringWriter;import java.io.Writer;import java.lang.Thread.UncaughtExceptionHandler;import java.lang.reflect.Field;import java.util.HashMap;import java.util.Map;import com.diandian.application.MobileApplication;import android.content.Context;import android.content.SharedPreferences.Editor;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.content.pm.PackageManager.NameNotFoundException;import android.os.Build;import android.util.Log;/** * UncaughtException处理类,当程序发生Uncaught异常的时候,有该类来接管程序,并记录发送错误报告. *  * *  */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>();/** 保证只有一个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 */@Overridepublic void uncaughtException(Thread thread, Throwable ex) {if (handleException(ex) && mDefaultHandler != null) {// 如果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);} else {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);//非正常退出}}/** * 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成. *  * @param ex * @return true:如果处理了该异常信息;否则返回false. */private boolean handleException(Throwable ex) {if (ex == null) {return false;}// 收集设备参数信息collectDeviceInfo(mContext);// 保存日志文件saveCrashInfoToLocalStorage(ex);return true;}/** * 收集设备参数信息 *  * @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) {}// 使用反射来收集设备信息.在Build类中包含各种设备信息,// 例如: 系统版本号,设备生产商 等帮助调试程序的有用信息Field[] fields = Build.class.getDeclaredFields();for (Field field : fields) {try {field.setAccessible(true);infos.put(field.getName(), field.get(null).toString());} catch (Exception e) {}}}/** * 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 saveCrashInfoToLocalStorage(Throwable ex) {StringBuffer sb = new StringBuffer();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);Editor editor=MobileApplication.sp.edit();editor.putString(MobileApplication.sp.getString("dd_id","")+"crashInfo", sb.toString());editor.commit();return null;}}

三：登录的时候做判断，将数据上传服务器：

if(!MobileApplication.sp.getString(MobileApplication.sp.getString("dd_id","")+"crashInfo", "").equals("")){String bugInfo=MobileApplication.sp.getString(MobileApplication.sp.getString("dd_id","")+"crashInfo", "");new BugInfoToServer().execute(bugInfo);}