添加异常信息的收集之后,当APK出现异常崩溃,会收集异常信息,以及体现用户用户当前APK出现异常
1、核心类:CrashHandler
/**
* 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.(路径:sdcard/crash/yyyy-MM-dd-HH-mm-ss)
*/
public class CrashHandler implements UncaughtExceptionHandler {
public static final String TAG = "CrashHandler";
/**系统默认的UncaughtException处理类*/
private UncaughtExceptionHandler mExceptionHandler;
/**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> mInfos = new HashMap<String, String>();
/**用于格式化日期,作为日志文件名的一部分*/
private DateFormat mDateFormat = 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
*/
public void init(Context context) {
mContext = context;
//获取系统默认的UncaughtException处理器
mExceptionHandler = 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 pThread, Throwable pThrowable) {
if (!handleException(pThrowable) && mExceptionHandler != null) {
//如果用户没有处理则让系统默认的异常处理器来处理
mExceptionHandler.uncaughtException(pThread, pThrowable);
} 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 pThrowable
* @return true:如果处理了该异常信息;否则返回false.
*/
private boolean handleException(Throwable pThrowable) {
if (pThrowable == 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(pThrowable);
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 + "";
mInfos.put("versionName", versionName);
mInfos.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);
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);
}
}
}
/**
* 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 : 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 = mDateFormat.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;
}
}
2、使用方法:在项目的Application类中
@Override
public void onCreate() {
super.onCreate();
// 获取Context
sContexts = getApplicationContext();
//开启异常管理
CrashHandler crashHandler = CrashHandler.getInstance();
crashHandler.init(getApplicationContext());
}