無法使用GPS獲取位置

我正試圖製作一個簡單的應用程序來顯示我的位置座標。當我模擬代碼（nexus 6.0，它的工作原理）。但是，當我通過usb調試（我的htc 10）使用真實設備時，按按鈕顯示我的座標時不會顯示任何內容。任何想法爲什麼？這是我的代碼：無法使用GPS獲取位置

//Location 
    textView = (TextView) findViewById(R.id.textView); 
    button2 = (Button) findViewById(R.id.button2); 
    locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 

    listener = new LocationListener() { 
     @Override 
     public void onLocationChanged(Location location) { 
      textView.append("\n " + location.getLongitude() + " " + location.getLatitude()); 
      System.out.println(location.getLongitude()); 
      System.out.println(location.getLatitude()); 
     } 

     @Override 
     public void onStatusChanged(String s, int i, Bundle bundle) { 

     } 

     @Override 
     public void onProviderEnabled(String s) { 

     } 

     @Override 
     public void onProviderDisabled(String s) { 

      Intent i = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); 
      startActivity(i); 
     } 
    }; 

    configure_button(); 

} 

@Override 
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, 
             @NonNull int[] grantResults) { 
    switch (requestCode) { 
     case 10: 
      configure_button(); 
      break; 
     default: 
      break; 
    } 
} 

void configure_button() { 
    // first check for permissions 
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != 
      PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, 
      Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 
      requestPermissions(new String[]{Manifest.permission.ACCESS_COARSE_LOCATION, 
          Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.INTERNET} 
        , 10); 
     } 
     return; 
    } 
    // this code won't execute IF permissions are not allowed, because in the line above there is return statement. 
    button2.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      //noinspection MissingPermission 
      locationManager.requestLocationUpdates("gps", 5000, 0, listener); 
     } 
    }); 
}

我有這個加在我的清單：

<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
<uses-feature android:name="android.hardware.location.gps" />

來源

2017-06-07 Gimv13

我想你必須使用融合的位置API提供的谷歌https://developer.android.com/training/location/receive-location-updates.html –

你應該申報button2點擊監聽的OnCreate因爲有return語句在configure_button()方法。

只需在聲明id後聲明它。

textView = (TextView) findViewById(R.id.textView); 
    button2 = (Button) findViewById(R.id.button2); 
    locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 
    button2.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      //noinspection MissingPermission 
      locationManager.requestLocationUpdates("gps", 5000, 0, listener); 
     } 
    }); 
    //rest of the code

來源

2017-06-07 17:33:23

無法使用GPS獲取位置

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