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https://github.com/pppscn/SmsForwarder
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新增：异常捕获类，记录crash日志
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pppscn
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commit
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185
app/src/main/java/com/idormy/sms/forwarder/CrashHandler.java
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185
app/src/main/java/com/idormy/sms/forwarder/CrashHandler.java
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package com.idormy.sms.forwarder;
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import android.annotation.SuppressLint;
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import android.content.Context;
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import android.content.pm.PackageInfo;
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import android.content.pm.PackageManager;
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import android.os.Build;
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import android.os.Looper;
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import android.util.Log;
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import android.widget.Toast;
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import androidx.annotation.NonNull;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.PrintWriter;
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import java.io.StringWriter;
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import java.io.Writer;
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import java.lang.Thread.UncaughtExceptionHandler;
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import java.lang.reflect.Field;
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import java.text.DateFormat;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Objects;
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/**
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* 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
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*/
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public class CrashHandler implements UncaughtExceptionHandler {
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public static final String TAG = "CrashHandler";
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//系统默认的UncaughtException处理类
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private Thread.UncaughtExceptionHandler mDefaultHandler;
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//CrashHandler实例
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@SuppressLint("StaticFieldLeak")
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private static final CrashHandler INSTANCE = new CrashHandler();
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//程序的Context对象
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private Context mContext;
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//用来存储设备信息和异常信息
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private final Map<String, String> infos = new HashMap<>();
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//用于格式化日期,作为日志文件名的一部分
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@SuppressLint("SimpleDateFormat")
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private final DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
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/**
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* 保证只有一个CrashHandler实例
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*/
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private CrashHandler() {
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}
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/**
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* 获取CrashHandler实例 ,单例模式
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*/
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public static CrashHandler getInstance() {
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return INSTANCE;
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}
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/**
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* 初始化
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*/
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public void init(Context context) {
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mContext = context;
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//获取系统默认的UncaughtException处理器
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mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
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//设置该CrashHandler为程序的默认处理器
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Thread.setDefaultUncaughtExceptionHandler(this);
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}
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/**
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* 当UncaughtException发生时会转入该函数来处理
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*/
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@Override
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public void uncaughtException(@NonNull Thread thread, @NonNull Throwable ex) {
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if (!handleException(ex) && mDefaultHandler != null) {
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//如果用户没有处理则让系统默认的异常处理器来处理
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mDefaultHandler.uncaughtException(thread, ex);
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} else {
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try {
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Thread.sleep(3000);
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} catch (InterruptedException e) {
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Log.e(TAG, "error : ", e);
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} //退出程序
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android.os.Process.killProcess(android.os.Process.myPid());
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System.exit(1);
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}
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}
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/**
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* 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
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*
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* @param ex
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* @return true:如果处理了该异常信息;否则返回false.
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*/
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private boolean handleException(Throwable ex) {
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if (ex == null) {
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return false;
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} //使用Toast来显示异常信息
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new Thread() {
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@Override
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public void run() {
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Looper.prepare();
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Toast.makeText(mContext, "很抱歉,程序出现异常,即将退出.", Toast.LENGTH_LONG).show();
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Looper.loop();
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}
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}.start();
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//收集设备参数信息
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collectDeviceInfo(mContext);
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//保存日志文件
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saveCrashInfo2File(ex);
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return true;
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}
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/**
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* 收集设备参数信息
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*/
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public void collectDeviceInfo(Context ctx) {
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try {
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PackageManager pm = ctx.getPackageManager();
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PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES);
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if (pi != null) {
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String versionName = pi.versionName == null ? "null" : pi.versionName;
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String versionCode = pi.versionCode + "";
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infos.put("versionName", versionName);
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infos.put("versionCode", versionCode);
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}
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} catch (PackageManager.NameNotFoundException e) {
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Log.e(TAG, "an error occured when collect package info", e);
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}
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Field[] fields = Build.class.getDeclaredFields();
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for (Field field : fields) {
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try {
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field.setAccessible(true);
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infos.put(field.getName(), Objects.requireNonNull(field.get(null)).toString());
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Log.d(TAG, field.getName() + " : " + field.get(null));
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} catch (Exception e) {
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Log.e(TAG, "an error occured when collect crash info", e);
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}
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}
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}
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/**
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* 保存错误信息到文件中
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*/
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@SuppressWarnings({"ResultOfMethodCallIgnored", "UnusedReturnValue"})
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private String saveCrashInfo2File(Throwable ex) {
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StringBuilder sb = new StringBuilder();
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for (Map.Entry<String, String> entry : infos.entrySet()) {
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String key = entry.getKey();
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String value = entry.getValue();
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sb.append(key).append("=").append(value).append("\n");
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}
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Writer writer = new StringWriter();
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PrintWriter printWriter = new PrintWriter(writer);
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ex.printStackTrace(printWriter);
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Throwable cause = ex.getCause();
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while (cause != null) {
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cause.printStackTrace(printWriter);
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cause = cause.getCause();
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}
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printWriter.close();
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String result = writer.toString();
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sb.append(result);
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try {
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long timestamp = System.currentTimeMillis();
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String time = formatter.format(new Date());
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String fileName = "crash-" + time + "-" + timestamp + ".log";
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String path = mContext.getCacheDir().getPath() + File.separator + "crash" + File.separator;
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Log.e(TAG, path);
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File dir = new File(path);
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if (!dir.exists()) {
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dir.mkdirs();
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}
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FileOutputStream fos = new FileOutputStream(path + fileName);
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fos.write(sb.toString().getBytes());
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fos.close();
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return fileName;
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} catch (Exception e) {
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Log.e(TAG, "an error occured while writing file...", e);
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}
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return null;
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}
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}
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@ -44,6 +44,10 @@ public class MyApplication extends Application {
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super.onCreate();
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context = getApplicationContext();
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//异常捕获类
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CrashHandler crashHandler = CrashHandler.getInstance();
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crashHandler.init(getApplicationContext());
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try {
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//前台服务
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Intent intent = new Intent(this, FrontService.class);
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