小编use*_*570的帖子

我在我的应用程序中使用Android Beacon Library,我逐字逐句地复制了他们的测距示例,但我不断收到您在代码下方看到的错误.任何帮助将不胜感激,我刚刚进入BTLE/beacons

package com.example.josh.beacons;

import android.os.Bundle;
import android.os.RemoteException;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;

import org.altbeacon.beacon.Beacon;
import org.altbeacon.beacon.BeaconConsumer;
import org.altbeacon.beacon.BeaconManager;
import org.altbeacon.beacon.BeaconParser;
import org.altbeacon.beacon.RangeNotifier;
import org.altbeacon.beacon.Region;

import java.util.Collection;

public class MainActivity extends AppCompatActivity implements BeaconConsumer {
    protected static final String TAG = "RangingActivity";
    private BeaconManager beaconManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        beaconManager = BeaconManager.getInstanceForApplication(this);
        beaconManager.getBeaconParsers().add(new BeaconParser().setBeaconLayout("m:2-3=beac,i:4-19,i:20-21,i:22-23,p:24-24,d:25-25"));
        beaconManager.bind(this);
    }
    @Override
    protected void onDestroy() {
        super.onDestroy();
        beaconManager.unbind(this);
    }
    @Override
    public void onBeaconServiceConnect() {
        beaconManager.setRangeNotifier(new RangeNotifier() {
            @Override
            public void didRangeBeaconsInRegion(Collection<Beacon> …

当 jsx 跨越多行时，什么 eslint 规则更喜欢前者而不是后者？目前更漂亮正在将首选更改为不首选

const preferred = (
    <tag
        prop={hi}
        another={test}
    \>
);

const notPreferred = (<tag
        prop={hi}
        Another={test}
    \>
);

我创建了一个AVCaptureSession并将前置摄像头连接到它上面

do {
   try captureSession.addInput(AVCaptureDeviceInput(device: captureDevice))
   }catch{print("err")}

现在我想开始并停止在touche事件上录制.我该怎么做呢？

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        print("touch")
        //Start Recording
    }

override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
        print("release");
        //End Recording and Save
    }