/**
* 全局异常处理
*
* @author hy
* @date 2020/4/2
*/
public class CrashHandler implements Thread.UncaughtExceptionHandler {
private static CrashHandler INSTANCE;
private Context mContext;
private Thread.UncaughtExceptionHandler mDefaultUncaughtExceptionHandler;
// 用来存储设备信息和异常信息
private Map<String, String> mErrorInfoMap = new LinkedHashMap<>();
// 用于格式化日期,作为日志文件名的一部分
private SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
private String mDivider = "==============divider==============";
private CrashHandler() {
}
public static CrashHandler getInstance(Context context) {
if (INSTANCE == null) {
INSTANCE = new CrashHandler();
INSTANCE.mContext = context;
INSTANCE.mDefaultUncaughtExceptionHandler = Thread.getDefaultUncaughtExceptionHandler();
Thread.setDefaultUncaughtExceptionHandler(INSTANCE);
}
return INSTANCE;
}
@Override
public void uncaughtException(Thread thread, Throwable ex) {
if (!handleException(ex) && mDefaultUncaughtExceptionHandler != null) {
mDefaultUncaughtExceptionHandler.uncaughtException(thread, ex);
} else {
try {
Thread.sleep(200);
} catch (InterruptedException e) {
// DLog.e("error : ", e);
}
// 退出程序,注释下面的重启启动程序代码
// android.os.Process.killProcess(android.os.Process.myPid());
// System.exit(1);
ex.printStackTrace();
// 重新启动程序，注释上面的退出程序
restartApp();
}
}
//异常崩溃 重新启动
private void restartApp() {
Intent intent = new Intent();
intent.setClass(mContext, SplashActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mContext.startActivity(intent);
}
public boolean handleException(Throwable ex) {
if (null == ex) {
return false;
}
// 使用 Toast 来显示异常信息
new Thread() {
@Override
public void run() {
Looper.prepare();
// ToastUtils.show(mContext, "出现未知错误");
Looper.loop();
}
}.start();
//记录设备参数信息
// 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 + "";
mErrorInfoMap.put("versionName", versionName);
mErrorInfoMap.put("versionCode", versionCode);
}
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
// DLog.e(e);
}
mErrorInfoMap.put("=", mDivider);
Field[] fields = Build.class.getDeclaredFields();
for (Field field : fields) {
try {
field.setAccessible(true);
mErrorInfoMap.put(field.getName(), field.get(null).toString());
// DLog.v(field.getName() + " : " + field.get(null));
} catch (Exception e) {
// DLog.e("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 : mErrorInfoMap.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(mDivider).append("\n");
sb.append(result);
try {
long timestamp = System.currentTimeMillis();
String time = mSimpleDateFormat.format(new Date());
String fileName = "crash-" + time + "-" + timestamp + ".log";
String logDir = "log";
File path = new File(mContext.getExternalCacheDir() + File.separator + logDir + File.separator + fileName);
if (!path.getParentFile().exists()) {
path.getParentFile().mkdirs();
}
FileOutputStream fos = new FileOutputStream(path);
fos.write(sb.toString().getBytes());
fos.close();
return fileName;
} catch (Exception e) {
// DLog.e("an error occured while writing file... ", e);
}
return null;
}
}
在Application中使用
//初始化全局异常处理，崩溃自启
CrashHandler.getInstance(this);