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Android 全局異常捕獲
今天就來說說作為程序猿的我們每天都會遇到的東西bug,出bug不可怕可怕的是沒有出bug時的堆棧信息,那么對于bug的信息收集就顯得尤為重要了,一般用第三方bugly或者友盟等等都能輕易收集,但是由于公司不讓使用第三方,而安卓正好有原生的異常收集類UncaughtExceptionHandler,那么今天博客就從這個類開始.
UncaughtExceptionHandler見名知意,即他是處理我們未捕獲的異常,具體使用分兩步
1.實現(xiàn)我們自己的異常處理類
public class CrashHandler implements Thread.UncaughtExceptionHandler { @Override public void uncaughtException(Thread thread, Throwable ex) { } }
需要我們實現(xiàn)Thread.UncaughtExceptionHandler接口當(dāng)有未捕獲的異常的時候會回調(diào)uncaughtException(Thread thread, Throwable ex)方法
2.設(shè)置該CrashHandler為系統(tǒng)默認(rèn)的
Thread.setDefaultUncaughtExceptionHandler(crashHandler);
以上只是使用步驟的介紹,具體項目中的使用我直接貼代碼
在application中初始化
package com.zly.www.basedemo.base; import android.app.Application; import android.content.Context; import com.zly.www.basedemo.exception.CrashHandler; /** * Created by zly on 2016/6/11. */ public class AppApplication extends Application { private static Context mContext; @Override public void onCreate() { super.onCreate(); this.mContext = this; CrashHandler.getInstance().init(this);//初始化全局異常管理 } public static Context getContext(){ return mContext; } }
CrashHandler 實現(xiàn)類如下
package com.zly.www.basedemo.exception; import android.content.Context; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.os.Build; import android.os.Environment; import android.os.Looper; import android.util.Log; import android.widget.Toast; import com.zly.www.basedemo.utils.AppManager; import java.io.File; import java.io.FileOutputStream; import java.io.PrintWriter; import java.io.StringWriter; import java.io.Writer; import java.lang.reflect.Field; import java.text.SimpleDateFormat; import java.util.Date; import java.util.HashMap; import java.util.Map; /** * 全局異常捕獲 * Created by zly on 2016/7/3. */ public class CrashHandler implements Thread.UncaughtExceptionHandler { /** * 系統(tǒng)默認(rèn)UncaughtExceptionHandler */ private Thread.UncaughtExceptionHandler mDefaultHandler; /** * context */ private Context mContext; /** * 存儲異常和參數(shù)信息 */ private Map<String,String> paramsMap = new HashMap<>(); /** * 格式化時間 */ private SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss"); private String TAG = this.getClass().getSimpleName(); private static CrashHandler mInstance; private CrashHandler() { } /** * 獲取CrashHandler實例 */ public static synchronized CrashHandler getInstance(){ if(null == mInstance){ mInstance = new CrashHandler(); } return mInstance; } public void init(Context context){ mContext = context; mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler(); //設(shè)置該CrashHandler為系統(tǒng)默認(rèn)的 Thread.setDefaultUncaughtExceptionHandler(this); } /** * uncaughtException 回調(diào)函數(shù) */ @Override public void uncaughtException(Thread thread, Throwable ex) { if(!handleException(ex) && mDefaultHandler != null){//如果自己沒處理交給系統(tǒng)處理 mDefaultHandler.uncaughtException(thread,ex); }else{//自己處理 try {//延遲3秒殺進(jìn)程 Thread.sleep(3000); } catch (InterruptedException e) { Log.e(TAG, "error : ", e); } //退出程序 AppManager.getAppManager().AppExit(mContext); } } /** * 收集錯誤信息.發(fā)送到服務(wù)器 * @return 處理了該異常返回true,否則false */ private boolean handleException(Throwable ex) { if (ex == null) { return false; } //收集設(shè)備參數(shù)信息 collectDeviceInfo(mContext); //添加自定義信息 addCustomInfo(); //使用Toast來顯示異常信息 new Thread() { @Override public void run() { Looper.prepare(); Toast.makeText(mContext, "程序開小差了呢..", Toast.LENGTH_SHORT).show(); Looper.loop(); } }.start(); //保存日志文件 saveCrashInfo2File(ex); return true; } /** * 收集設(shè)備參數(shù)信息 * @param ctx */ public void collectDeviceInfo(Context ctx) { //獲取versionName,versionCode 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 + ""; paramsMap.put("versionName", versionName); paramsMap.put("versionCode", versionCode); } } catch (PackageManager.NameNotFoundException e) { Log.e(TAG, "an error occured when collect package info", e); } //獲取所有系統(tǒng)信息 Field[] fields = Build.class.getDeclaredFields(); for (Field field : fields) { try { field.setAccessible(true); paramsMap.put(field.getName(), field.get(null).toString()); } catch (Exception e) { Log.e(TAG, "an error occured when collect crash info", e); } } } /** * 添加自定義參數(shù) */ private void addCustomInfo() { } /** * 保存錯誤信息到文件中 * * @param ex * @return 返回文件名稱,便于將文件傳送到服務(wù)器 */ private String saveCrashInfo2File(Throwable ex) { StringBuffer sb = new StringBuffer(); for (Map.Entry<String, String> entry : paramsMap.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 { long timestamp = System.currentTimeMillis(); String time = format.format(new Date()); String fileName = "crash-" + time + "-" + timestamp + ".log"; if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/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; } }
activity管理類
package com.zly.www.basedemo.utils; import java.util.Stack; import android.app.Activity; import android.app.ActivityManager; import android.content.Context; /** * Activity管理類:用于管理Activity和退出程序 * Created by zly on 2016/6/11. */ public class AppManager { // Activity棧 private static Stack<Activity> activityStack; // 單例模式 private static AppManager instance; private AppManager() { } /** * 單一實例 */ public static AppManager getAppManager() { if (instance == null) { instance = new AppManager(); } return instance; } /** * 添加Activity到堆棧 */ public void addActivity(Activity activity) { if (activityStack == null) { activityStack = new Stack<Activity>(); } activityStack.add(activity); } /** * 獲取當(dāng)前Activity(堆棧中最后一個壓入的) */ public Activity currentActivity() { Activity activity = activityStack.lastElement(); return activity; } /** * 結(jié)束當(dāng)前Activity(堆棧中最后一個壓入的) */ public void finishActivity() { Activity activity = activityStack.lastElement(); finishActivity(activity); } /** * 結(jié)束指定的Activity */ public void finishActivity(Activity activity) { if (activity != null) { activityStack.remove(activity); activity.finish(); activity = null; } } /** * 結(jié)束指定類名的Activity */ public void finishActivity(Class<?> cls) { for (Activity activity : activityStack) { if (activity.getClass().equals(cls)) { finishActivity(activity); break; } } } /** * 結(jié)束所有Activity */ public void finishAllActivity() { for (int i = 0; i < activityStack.size(); i++) { if (null != activityStack.get(i)) { activityStack.get(i).finish(); } } activityStack.clear(); } /** * 退出應(yīng)用程序 */ public void AppExit(Context context) { try { finishAllActivity(); //退出程序 android.os.Process.killProcess(android.os.Process.myPid()); System.exit(1); } catch (Exception e) { } } }
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