package com.scott.crash;
import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.Thread.UncaughtExceptionHandler;
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;
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Build;
import android.os.Environment;
import android.os.Looper;
import android.util.Log;
import android.widget.Toast;
/**
* 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.
*
* @author user
*
*/
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,作为日志文件名的一部分
private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
/** 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
*/
@Override
public 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);
}
}
/**
* 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;
}
//使用Toast来显示异常信息
new Thread() {
@Override
public void run() {
Looper.prepare();
Toast.makeText(mContext, "很抱歉,程序出现异常,即将退出.", Toast.LENGTH_LONG).show();
Looper.loop();
}
}.start();
//收集设备参数信息
collectDeviceInfo(mContext);
//保存日志文件
saveCrashInfo2File(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) {
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中
*
* @param ex
* @return 返回文件名称,便于将文件传送到服务器
*/
private String saveCrashInfo2File(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);
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-java native exception caught locally
Solution:
Use iQiyi's xCrash framework to capture and restart.
xCrash GitHub address:
https://github.com/iqiyi/xCrash/blob/master/README.zh-CN.md
Step 1:
Add the following code in the module's build.gradle:
android {
defaultConfig {
ndk {
// 根据需要添加必要的ABI
abiFilters 'armeabi', 'armeabi-v7a', 'arm64-v8a'
}
}
}
dependencies {
//捕获异常的开源库
implementation 'com.iqiyi.xcrash:xcrash-android-lib:2.4.9'
}
Step 2:
Initialize xCrash in the attachBaseContext of the Application.
import android.app.Application;
import android.content.Context;
import com.blankj.utilcode.util.AppUtils;
import xcrash.ICrashCallback;
import xcrash.XCrash;
public class MyApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
//初始化崩溃捕捉工具
initCrashTools();
}
/**
* 初始化崩溃捕捉工具
*/
private void initCrashTools() {
XCrash.InitParameters initParameters = new XCrash.InitParameters();
//需要将日志输出的路径,自行编辑
initParameters.setLogDir(FileConstant.LOG_FILE_PATH);
//引用com.blankj:utilcode库中的获取APP的VersionName
initParameters.setAppVersion(AppUtils.getAppVersionName());
//捕获异常后的回调函数
ICrashCallback crashCallback = new ICrashCallback() {
@Override
public void onCrash(String logPath, String emergency) {
// 发生崩溃后,重启软件
// 引用com.blankj:utilcode库中的重启方法
AppUtils.relaunchApp(true);
}
};
//java异常的捕获
initParameters.setJavaCallback(crashCallback);
//anr的捕获
initParameters.setAnrCallback(crashCallback);
//native异常的捕获
initParameters.setNativeCallback(crashCallback);
//初始化xCrash
XCrash.init(this, initParameters);
}
}
Step 3:
Add read and write permissions, Android 6.0 and above need to apply for dynamic permissions.
AndroidManifest.xml
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
BaseActivity.java
public abstract class BaseActivity extends AppCompatActivity{
/**
* 需要申请的权限
*/
private String[] mPermissions = {Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE,};
/**
* 没有允许的权限
*/
private List<String> mPermissionList = new ArrayList<>();
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.***);
//加载权限
initPermission();
}
/**
* 初始动态申请化权限
*/
private void initPermission() {
//使用兼容库就无需判断系统版本
for (String permission : mPermissions) {
if (ContextCompat.checkSelfPermission(getApplication(), permission) != PackageManager.PERMISSION_GRANTED) {
mPermissionList.add(permission);
}
}
if (mPermissionList.size() != 0) {
String[] objects = mPermissionList.toArray(new String[mPermissionList.size()]);
ActivityCompat.requestPermissions(this, objects, 0);
}
}
}