RxAndroidBLE - 简单的读取和显示1值

我完全是Android Studio的新手。我的简单目标是从我的BLE112中读取一个值并将其显示在应用程序中。我使用的是Android Studio 2.4 Preview 7.我已经拿到了RxAndroidBLE的官方示例代码，并将其裁剪下来，但仍然无法编译。任何帮助/建议将不胜感激。RxAndroidBLE - 简单的读取和显示1值

提到我的最终目标是将这些值以1000采样/秒的速度送入实时图。我已经有了与MPAndroidCharts一起工作的RealTime图表。只需要值...

这些都是当前的错误，但我敢肯定有一些更多....

错误：（21，52）错误：包com.trello.rxlifecycle。 android.ActivityEvent不存在错误：（48，41）错误：无法找到符号变量PAUSE

package com.example.monik.rx5; 

import android.support.v7.app.AppCompatActivity; 

import android.bluetooth.BluetoothGattCharacteristic; 
import android.os.Bundle; 
import android.util.Log; 
import android.widget.Button; 
import android.widget.TextView; 

import com.polidea.rxandroidble.RxBleConnection; 
import com.polidea.rxandroidble.RxBleDevice; 
import com.polidea.rxandroidble.RxBleClient; 
import com.polidea.rxandroidble.utils.ConnectionSharingAdapter; 

import java.util.UUID; 
import rx.Observable; 
import rx.android.schedulers.AndroidSchedulers; 
import rx.subjects.PublishSubject; 

import com.trello.rxlifecycle.android.ActivityEvent.PAUSE; 

public class MainActivity extends AppCompatActivity { 

    private static String macAddress = "00:07:80:F2:92:D8"; 
    private UUID characteristicUuid; 
    private PublishSubject<Void> disconnectTriggerSubject = PublishSubject.create(); 
    private Observable<RxBleConnection> connectionObservable; 
    private RxBleDevice bleDevice; 
    private RxBleClient bleClient; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     characteristicUuid = UUID.fromString("F90EA017-F673-45B8-B00B-16A088A2ED61"); 
     bleClient = RxBleClient.create(this); 
     bleDevice = bleClient.getBleDevice(macAddress); 
     connectionObservable = prepareConnectionObservable(); 
     onConnectToggleClick(); 
     onReadClick(); 
    } 

    private Observable<RxBleConnection> prepareConnectionObservable() { 
     return bleDevice 
       .establishConnection(false) 
       .takeUntil(disconnectTriggerSubject) 
       .compose(bindUntilEvent(PAUSE)) 
       .compose(new ConnectionSharingAdapter()); 
    } 

    public void onConnectToggleClick() { 

     if (isConnected()) { 
      triggerDisconnect(); 
     } else { 
      connectionObservable 
        .flatMap(RxBleConnection::discoverServices) 
        .flatMap(rxBleDeviceServices -> rxBleDeviceServices.getCharacteristic(characteristicUuid)) 
        .observeOn(AndroidSchedulers.mainThread()) 
        //.doOnSubscribe(() -> connectButton.setText(R.string.connecting)) 
        .subscribe(
          characteristic -> { 
           Log.i(getClass().getSimpleName(), "Hey, connection has been established!"); 
          }, 
          this::onConnectionFailure, 
          this::onConnectionFinished 
        ); 
     } 
    } 

    public void onReadClick() { 

     if (isConnected()) { 
      connectionObservable 
        .flatMap(rxBleConnection -> rxBleConnection.readCharacteristic(characteristicUuid)) 
        .observeOn(AndroidSchedulers.mainThread()) 
        .subscribe(bytes -> { 
         TextView tv = (TextView) findViewById(R.id.read_output); 
         tv.setText(new String(bytes)); 
        }, this::onReadFailure); 
     } 
    } 

    private boolean isConnected() { 
     return bleDevice.getConnectionState() == RxBleConnection.RxBleConnectionState.CONNECTED; 
    } 

    private void onConnectionFailure(Throwable throwable) { 
    } 

    private void onConnectionFinished() { 
    } 

    private void onReadFailure(Throwable throwable) { 
    } 

    private void triggerDisconnect() { 
    } 

}

来源

2017-07-18 user3286543

我投票结束这个问题作为题外话，因为它属于[代码审查]（https://codereview.stackexchange.com/） – G5W

从错误来看，你在你的项目中没有RxLifecycle库。你一定要添加到您的build.gradle：

compile 'com.trello:rxlifecycle:1.0' 
compile 'com.trello:rxlifecycle-components:1.0'

与样本项目的build.gradle文件进行比较和其他使用dependencies。

来源

2017-07-19 09:08:07

谢谢，这是非常有帮助的。我会尝试。 – user3286543

RxAndroidBLE - 简单的读取和显示1值

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