If you are happy, you can do anything ~
前情提要:三個版本之間完全解耦,可獨立查看任一版本; 篇中版本之間的代碼重複率在百分之90以上,只是爭對不同場景,做了歸納 ~
篇中歸納皆來自多篇網絡Blog,只是在其基礎上進行效果實驗,整合之後寫出自己的想法 ,方便予己 ~
經檢測針對 Android 9.0 系統,代碼有效,可實現我們的需求效果 ~
- 簡潔版代碼較少,基本均爲必要代碼;
- 業務版主要針對需要上傳App奔潰錯誤到後臺的需求;
- 封裝版適用項目,解耦的同時也方便管理;
簡潔版
基礎配置
初始化 - Application
MyApplication
package nk.com.restartapp;
import android.app.Activity;
import android.app.Application;
import android.content.Context;
import java.util.ArrayList;
import java.util.List;
/**
* @author MrLiu
* @date 2020/5/13
* desc
*/
public class MyApplication extends Application {
private static Context context;
List<Activity> activityList = new ArrayList<>();
@Override
public void onCreate() {
super.onCreate();
context = getApplicationContext();
}
/**
* context
*/
public static Context getContext() {
return context;
}
public void init() {
// 設置該CrashHandler爲程序的默認處理器
CrashHandler unCeHandler = new CrashHandler(this);
Thread.setDefaultUncaughtExceptionHandler(unCeHandler);
}
/**
* @param activity activity關閉時,刪除Activity列表中的Activity對象
*/
public void removeActivity(Activity activity) {
activityList.remove(activity);
}
/**
* @param activity 向列表中添加Activity對象
*/
public void addActivity(Activity activity) {
activityList.add(activity);
}
/**
* 關閉Activity列表中的 所有Activity
*/
public void finishAllActivity() {
for (Activity activity : activityList) {
if (null != activity) {
activity.finish();
}
}
// 殺死應用進程
android.os.Process.killProcess(android.os.Process.myPid());
}
}
清單註冊
application內註冊我們自己的application
android:name=".MyApplication"
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="nk.com.restartapp">
<application
android:name=".MyApplication"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
捕獲異常
CrashHandler
package nk.com.restartapp;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Looper;
import android.util.Log;
import android.widget.Toast;
/**
* @author MrLiu
* @date 2020/5/13
* desc 捕獲異常
*/
public class CrashHandler implements Thread.UncaughtExceptionHandler {
private Thread.UncaughtExceptionHandler mDefaultHandler;
MyApplication application;
public CrashHandler(MyApplication myApplication) {
// // 獲取系統默認的UncaughtException處理器
mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
this.application = myApplication;
}
/**
* 自定義錯誤處理,收集錯誤信息 發送錯誤報告等操作均在此完成.
*
* @param ex
* @return true:如果處理了該異常信息;否則返回false.
*/
@Override
public void uncaughtException(Thread thread, Throwable ex) {
if (!handlerException(ex) && mDefaultHandler != null) {
// 若果用戶沒有處理則讓系統默認的異常處理器來處理
mDefaultHandler.uncaughtException(thread, ex);
} else {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
Log.e("CatchExcep", "error ;", e);
}
// 重啓app
Intent intent = new Intent(application.getApplicationContext(), MainActivity.class);
// PendingIntent restartIntent = PendingIntent.getActivity(application.getApplicationContext(), 0, intent, Intent.FLAG_ACTIVITY_NEW_TASK);
PendingIntent restartIntent = PendingIntent.getActivity(MyApplication.getContext(), 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
// 退出程序
AlarmManager mgr = (AlarmManager) application.getSystemService(Context.ALARM_SERVICE);
// 3秒後重啓
mgr.set(AlarmManager.RTC, System.currentTimeMillis() + 3000, restartIntent);
application.finishAllActivity();
}
}
/**
* 獲取具體異常,此處可做崩潰前的處理
*
* @param ex
* @return true:如果處理了該異常信息;否則返回false.
*/
private boolean handlerException(Throwable ex) {
if (ex == null) {
return false;
}
// 發個友好的提示,彈個土司 - 此處只是爲了效果,可進行註釋或替換爲自己的邏輯代碼
new Thread() {
public void run() {
Looper.prepare();
Toast.makeText(application.getApplicationContext(), "檢測到程序異常,即將退出", Toast.LENGTH_SHORT).show();
Looper.loop();
}
}.start();
return true;
}
}
使用方式
MainActivity
package nk.com.restartapp;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends BaseActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 檢測程序異常
CatchExcApplication();
}
/**
* 檢測程序異常,重啓
*/
public void CatchExcApplication() {
// 添加程序異常檢測
MyApplication application = (MyApplication) getApplication();
application.init();
application.addActivity(this);
}
}
業務版
百分之90的代碼相同,唯一不同的是CrashHandler(異常)的一個處理方式,在這個版本中可以在APP崩潰之前將錯誤上傳到後臺,主要用於及時定位問題 ; 不過題外話一下,其實現在有很多方式可以三方平臺的SDK可以進行錯誤收集 ~
基礎配置
初始化 - Application
MyApplication
package nk.com.startappdemo;
import android.app.Activity;
import android.app.Application;
import android.content.Context;
import java.util.ArrayList;
import java.util.List;
/**
* @author MrLiu
* @date 2020/5/13
* desc
*/
public class MyApplication extends Application {
private static Context context;
List<Activity> activityList = new ArrayList<>();
@Override
public void onCreate() {
super.onCreate();
context = getApplicationContext();
}
/**
* context
*/
public static Context getContext() {
return context;
}
public void init() {
// 設置該CrashHandler爲程序的默認處理器
CrashHandler unCeHandler = new CrashHandler(this);
Thread.setDefaultUncaughtExceptionHandler(unCeHandler);
}
/**
* @param activity activity關閉時,刪除Activity列表中的Activity對象
*/
public void removeActivity(Activity activity) {
activityList.remove(activity);
}
/**
* @param activity 向列表中添加Activity對象
*/
public void addActivity(Activity activity) {
activityList.add(activity);
}
/**
* 關閉Activity列表中的 所有Activity
*/
public void finishAllActivity() {
for (Activity activity : activityList) {
if (null != activity) {
activity.finish();
}
}
// 殺死應用進程
android.os.Process.killProcess(android.os.Process.myPid());
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="nk.com.startappdemo">
<application
android:name=".MyApplication"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
捕獲異常
CrashHandler
package nk.com.startappdemo;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
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 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.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
/**
* @author MrLiu
* @date 2020/5/12
* desc 異常捕獲處理 ~
*/
public class CrashHandler implements Thread.UncaughtExceptionHandler {
public static final String TAG = "CrashHandler";
private static CrashHandler INSTANCE = new CrashHandler();
/**
* 系統默認的UncaughtException處理類
**/
private Thread.UncaughtExceptionHandler mDefaultHandler;
/**
* 用來存儲設備信息和異常信息
**/
private Map<String, String> mInfos = new HashMap<String, String>();
private DateFormat mFormatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
public CrashHandler() {
}
public static CrashHandler getInstance() {
return INSTANCE;
}
public void init() {
// 獲取系統默認的UncaughtException處理器
mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
// 設置該CrashHandler爲程序的默認處理器
Thread.setDefaultUncaughtExceptionHandler(this);
}
/**
* @描述: 當UncaughtException發生時會轉入該函數來處理
*/
@Override
public void uncaughtException(Thread thread, Throwable ex) {
if (!handleException(ex) && mDefaultHandler != null) {
// 如果用戶沒有處理則讓系統默認的異常處理器來處理
mDefaultHandler.uncaughtException(thread, ex);
} else {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
Log.e(this.getClass().toString(), e == null ? "" : e.toString());
}
// 重新啓動應用
Intent intent = new Intent(MyApplication.getContext(), MainActivity.class);
PendingIntent restartIntent = PendingIntent.getActivity(MyApplication.getContext(), 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager mgr = (AlarmManager) MyApplication.getContext().getSystemService(Context.ALARM_SERVICE);
// 1秒鐘後重啓應用
mgr.set(AlarmManager.RTC, System.currentTimeMillis() + 1000, restartIntent);
// todo:退出程序
android.os.Process.killProcess(android.os.Process.myPid());
System.exit(1);
}
}
/**
* @return true:如果處理了該異常信息;否則返回false.
* @throws
* @描述:自定義錯誤處理,收集錯誤信息 發送錯誤報告等操作均在此完成.
*/
private boolean handleException(Throwable ex) {
if (null == ex) {
return false;
}
// 使用Toast來顯示異信息
new Thread() {
@Override
public void run() {
Looper.prepare();
Toast.makeText(MyApplication.getContext(), "程序開了個小差,即將退出.", Toast.LENGTH_LONG).show();
Looper.loop();
}
}.start();
// 收集設備參數信息
collectDeviceInfo(MyApplication.getContext());
// 保存日誌文件
saveCrashInfo2File(ex);
return true;
}
/**
* @描述:收集設備參數信息
*/
private void collectDeviceInfo(Context context) {
try {
PackageManager pm = context.getPackageManager();
PackageInfo pi = pm.getPackageInfo(context.getPackageName(), PackageManager.GET_ACTIVITIES);
if (pi != null) {
String versionName = pi.versionName == null ? "null" : pi.versionName;
String versionCode = pi.versionCode + "";
mInfos.put("versionName", versionName);
mInfos.put("versionCode", versionCode);
}
} catch (PackageManager.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);
mInfos.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);
}
}
}
/**
* @throws
* @描述:保存錯誤信息到文件中 目錄/sdcard/qfangadtv/crash/
* @返回類型 void 返回文件名稱,便於將文件傳送到服務器
*/
private String saveCrashInfo2File(Throwable ex) {
StringBuffer sb = new StringBuffer();
for (Map.Entry<String, String> entry : mInfos.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 = mFormatter.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;
}
}
使用方式
MainActivity
package nk.com.restartapp;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends BaseActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 檢測程序異常
CatchExcApplication();
}
/**
* 檢測程序異常,重啓
*/
public void CatchExcApplication() {
// 添加程序異常檢測
MyApplication application = (MyApplication) getApplication();
application.init();
application.addActivity(this);
}
}
封裝版
基於項目開發原則進行二次簡單封裝,方便管理 ( Demo地址在此 ) ~
基礎配置
初始化 - Application
MyApplication
package nk.com.restartapp;
import android.app.Activity;
import android.app.Application;
import android.content.Context;
import java.util.ArrayList;
import java.util.List;
/**
* @author MrLiu
* @date 2020/5/13
* desc
*/
public class MyApplication extends Application {
private static Context context;
List<Activity> activityList = new ArrayList<>();
@Override
public void onCreate() {
super.onCreate();
context = getApplicationContext();
init();
}
/**
* context
*/
public static Context getContext() {
return context;
}
public void init() {
// 設置該CrashHandler爲程序的默認處理器
CrashHandler unCeHandler = new CrashHandler(this);
Thread.setDefaultUncaughtExceptionHandler(unCeHandler);
}
/**
* @param activity activity關閉時,刪除Activity列表中的Activity對象
*/
public void removeActivity(Activity activity) {
activityList.remove(activity);
}
/**
* @param activity 向列表中添加Activity對象
*/
public void addActivity(Activity activity) {
activityList.add(activity);
}
/**
* 關閉Activity列表中的 所有Activity
*/
public void finishAllActivity() {
for (Activity activity : activityList) {
if (null != activity) {
activity.finish();
}
}
// 殺死應用進程
android.os.Process.killProcess(android.os.Process.myPid());
}
}
清單註冊
application內註冊我們自己的application
android:name=".MyApplication"
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="nk.com.restartapp">
<application
android:name=".MyApplication"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
捕獲異常
CrashHandler
package nk.com.restartapp;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Looper;
import android.util.Log;
import android.widget.Toast;
/**
* @author MrLiu
* @date 2020/5/13
* desc 捕獲異常
*/
public class CrashHandler implements Thread.UncaughtExceptionHandler {
private Thread.UncaughtExceptionHandler mDefaultHandler;
MyApplication application;
public CrashHandler(MyApplication myApplication) {
// // 獲取系統默認的UncaughtException處理器
mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
this.application = myApplication;
}
/**
* 自定義錯誤處理,收集錯誤信息 發送錯誤報告等操作均在此完成.
*
* @param ex
* @return true:如果處理了該異常信息;否則返回false.
*/
@Override
public void uncaughtException(Thread thread, Throwable ex) {
if (!handlerException(ex) && mDefaultHandler != null) {
// 若果用戶沒有處理則讓系統默認的異常處理器來處理
mDefaultHandler.uncaughtException(thread, ex);
} else {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
Log.e("CatchExcep", "error ;", e);
}
// 重啓app
Intent intent = new Intent(application.getApplicationContext(), MainActivity.class);
// PendingIntent restartIntent = PendingIntent.getActivity(application.getApplicationContext(), 0, intent, Intent.FLAG_ACTIVITY_NEW_TASK);
PendingIntent restartIntent = PendingIntent.getActivity(MyApplication.getContext(), 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
// 退出程序
AlarmManager mgr = (AlarmManager) application.getSystemService(Context.ALARM_SERVICE);
// 3秒後重啓
mgr.set(AlarmManager.RTC, System.currentTimeMillis() + 3000, restartIntent);
application.finishAllActivity();
}
}
/**
* 獲取具體異常,此處可做崩潰前的處理
*
* @param ex
* @return true:如果處理了該異常信息;否則返回false.
*/
private boolean handlerException(Throwable ex) {
if (ex == null) {
return false;
}
// 發個友好的提示,彈個土司 - 此處只是爲了效果,可進行註釋或替換爲自己的邏輯代碼
new Thread() {
public void run() {
Looper.prepare();
Toast.makeText(application.getApplicationContext(), "檢測到程序異常,即將退出", Toast.LENGTH_SHORT).show();
Looper.loop();
}
}.start();
return true;
}
}
封裝BaseActivity
BaseActivity
package nk.com.restartapp;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
/**
* @author MrLiu
* @date 2020/5/13
* desc
*/
public class BaseActivity extends AppCompatActivity {
private MyApplication application;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
application = (MyApplication) getApplication();
// 添加 - 檢測程序異常
CatchExcApplication();
}
public void CatchExcApplication() {
application.init();
application.addActivity(this);
}
@Override
protected void onDestroy() {
super.onDestroy();
application.removeActivity(this);
}
}
自造異常 - 測試效果
MainActivity
package nk.com.restartapp;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends BaseActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toast.makeText(this, "啓動完成", Toast.LENGTH_SHORT).show();
findViewById(R.id.btn).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
List<Object> list = new ArrayList<>();
}
});
}
}
activity_main
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="@+id/btn"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_gravity="center"
android:background="#ff7"
android:gravity="center"
android:textColor="#f42"
android:text="自創崩潰 - 數據越界" />
</LinearLayout>