public class CrashHandler implements UncaughtExceptionHandler {

 private static final String TAG = "CrashHandler";
 private static final boolean DEBUG = true;

 private static final String FILE_NAME = "crash";

// log文件的后綴名
private static final String FILE_NAME_SUFFIX = ".txt";

private static CrashHandler sInstance = new CrashHandler();

// 系統(tǒng)默認(rèn)的異常處理（默認(rèn)情況下，系統(tǒng)會(huì)終止當(dāng)前的異常程序）
private UncaughtExceptionHandler mDefaultCrashHandler;

private Context mContext;
//log路徑
private String mLogPath=null;

// 構(gòu)造方法私有，防止外部構(gòu)造多個(gè)實(shí)例，即采用單例模式
private CrashHandler() {
}

public static CrashHandler getInstance() {
 return sInstance;
}

// 這里主要完成初始化工作
public void init(Context context,String logPath) {
 // 獲取系統(tǒng)默認(rèn)的異常處理器
 mDefaultCrashHandler = Thread.getDefaultUncaughtExceptionHandler();
 // 將當(dāng)前實(shí)例設(shè)為系統(tǒng)默認(rèn)的異常處理器
 Thread.setDefaultUncaughtExceptionHandler(this);
 // 獲取Context，方便內(nèi)部使用
 mContext = context.getApplicationContext();
 this.mLogPath=logPath;
}

/**
 * 這個(gè)是最關(guān)鍵的函數(shù)，當(dāng)程序中有未被捕獲的異常，系統(tǒng)將會(huì)自動(dòng)調(diào)用#uncaughtException方法
 * thread為出現(xiàn)未捕獲異常的線程，ex為未捕獲的異常，有了這個(gè)ex，我們就可以得到異常信息。
 */
@Override
public void uncaughtException(Thread thread, Throwable ex) {
 try {
  // 導(dǎo)出異常信息到SD卡中
  dumpExceptionToSDCard(ex);
  // 這里可以通過(guò)網(wǎng)絡(luò)上傳異常信息到服務(wù)器，便于開(kāi)發(fā)人員分析日志從而解決bug
  uploadExceptionToServer();
 } catch (IOException e) {
  e.printStackTrace();
 }

 // 打印出當(dāng)前調(diào)用棧信息
 ex.printStackTrace();

 // 如果系統(tǒng)提供了默認(rèn)的異常處理器，則交給系統(tǒng)去結(jié)束我們的程序，否則就由我們自己結(jié)束自己
 if (mDefaultCrashHandler != null) {
  mDefaultCrashHandler.uncaughtException(thread, ex);
 } else {
  Process.killProcess(Process.myPid());
 }

}

/**
 * 寫入SD卡
 * 
 * @param ex
 * @throws IOException
 */
@SuppressLint("SimpleDateFormat")
private void dumpExceptionToSDCard(Throwable ex) throws IOException {
 // 如果SD卡不存在或無(wú)法使用，則無(wú)法把異常信息寫入SD卡
 if (!Environment.getExternalStorageState().equals(
   Environment.MEDIA_MOUNTED)) {
  if (DEBUG) {
   Log.e(TAG, "sdcard unmounted,skip dump exception");
   return;
  }
 }

 File dir = new File(mLogPath);
 if (!dir.exists()) {
  dir.mkdirs();
 }
 long current = System.currentTimeMillis();
 String time = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
   .format(new Date(current));
 // 以當(dāng)前時(shí)間創(chuàng)建log文件
 File file = new File(mLogPath + FILE_NAME + time
   + FILE_NAME_SUFFIX);

 try {
  PrintWriter pw = new PrintWriter(new BufferedWriter(new FileWriter(
    file)));
  // 導(dǎo)出發(fā)生異常的時(shí)間
  pw.println(time);

  // 導(dǎo)出手機(jī)信息
  dumpPhoneInfo(pw);

  pw.println();
  // 導(dǎo)出異常的調(diào)用棧信息
  ex.printStackTrace(pw);

  pw.close();
 } catch (Exception e) {
  Log.e(TAG, "dump crash info failed");
 }
}

private void dumpPhoneInfo(PrintWriter pw) throws NameNotFoundException {
 // 應(yīng)用的版本名稱和版本號(hào)
 PackageManager pm = mContext.getPackageManager();
 PackageInfo pi = pm.getPackageInfo(mContext.getPackageName(),
   PackageManager.GET_ACTIVITIES);
 pw.print("App Version: ");
 pw.print(pi.versionName);
 pw.print('_');
 pw.println(pi.versionCode);

 // android版本號(hào)
 pw.print("OS Version: ");
 pw.print(Build.VERSION.RELEASE);
 pw.print("_");
 pw.println(Build.VERSION.SDK_INT);

 // 手機(jī)制造商
 pw.print("Vendor: ");
 pw.println(Build.MANUFACTURER);

 // 手機(jī)型號(hào)
 pw.print("Model: ");
 pw.println(Build.MODEL);

 // cpu架構(gòu)
 pw.print("CPU ABI: ");
 pw.println(Build.CPU_ABI);
}

/**
 * 上傳到服務(wù)器(這里需要實(shí)現(xiàn))
 */
private void uploadExceptionToServer() {
}

}

public class APP extends Application {
 //log路徑
 private static final String LOG_PATH= Environment
  .getExternalStorageDirectory().getPath() + File.separator + "Live" + File.separator
  + "log" + File.separator;

 @Override
public void onCreate() {
 super.onCreate();
 CrashHandler.getInstance().init(this,LOG_PATH);
}
}

class MainActivity : AppCompatActivity(){

var mBtnSecond:Button?=null;

override fun onCreate(savedInstanceState: Bundle?) {
 super.onCreate(savedInstanceState)
 setContentView(R.layout.activity_main)
 checkPermission()
 initView()
}


fun initView(){
 mBtnSecond=findViewById(R.id.btn_second)
 mBtnSecond?.setOnClickListener{
  var intent= Intent(this,SecondActivity::class.java)
  startActivity(intent)
 }
}

/**
 * 6.0以下版本(系統(tǒng)自動(dòng)申請(qǐng)) 不會(huì)彈框
 * 有些廠商修改了6.0系統(tǒng)申請(qǐng)機(jī)制，他們修改成系統(tǒng)自動(dòng)申請(qǐng)權(quán)限了
 */
private fun checkPermission(){
 val permissionItems = ArrayList<PermissionItem>()
 permissionItems.add(PermissionItem(Manifest.permission.READ_EXTERNAL_STORAGE, "讀取空間", R.drawable.permission_ic_phone))
 permissionItems.add(PermissionItem(Manifest.permission.WRITE_EXTERNAL_STORAGE,"存儲(chǔ)空間",R.drawable.permission_ic_storage))
 HiPermission.create(this)
   .title("親愛(ài)的上帝")
   .msg("為了能夠正常使用，請(qǐng)開(kāi)啟這些權(quán)限吧！")
   .permissions(permissionItems)
   .style(R.style.PermissionDefaultBlueStyle)
   .animStyle(R.style.PermissionAnimScale)
   .checkMutiPermission(object : PermissionCallback {
    override fun onClose() {
     Toast.makeText(this@MainActivity,"用戶關(guān)閉了權(quán)限",Toast.LENGTH_LONG).show();
    }

    override fun onFinish() {
     Toast.makeText(this@MainActivity,"初始化完畢！",Toast.LENGTH_LONG).show();
    }

    override fun onDeny(permission: String, position: Int) {
    }

    override fun onGuarantee(permission: String, position: Int) {
    }
   })
}

 }

public class CrashActivity extends AppCompatActivity {

Button mBtnCrash;

@Override
protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_second);
 mBtnCrash=findViewById(R.id.btn_crash);
 mBtnCrash.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View v) {
   Toast.makeText(CrashActivity.this,"出現(xiàn)異常了",Toast.LENGTH_LONG).show();
    throw new RuntimeException(toUtf8("出現(xiàn)異常了"));
  }
 });
}

public static String toUtf8(String str) {
 String result = null;
 try {
  result = new String(str.getBytes("UTF-8"), "UTF-8");
 } catch (UnsupportedEncodingException e) {
  e.printStackTrace();
 }
 return result;
}
}