Question

我正在尝试编写一个获取当前位置并实时显示纬度和经度的应用。但是，当我运行此应用程序时，gps似乎不会搜索位置并尝试修复。我不知道为什么会这样。我错过了什么吗？如果我打开地图应用程序，该位置立即得到修复。但是在我的应用程序中，gps并没有在通知栏中搜索一个或至少，它没有显示任何类似“搜索gps”的内容，这通常由地图应用程序显示。

我的主要活动：

package com.example.android.location1;

import android.Manifest;
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.Build;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;

public class MainActivity extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks, LocationListener{

private final String LOG_TAG = "TestApp";
private TextView txtOutput;
private GoogleApiClient mGoogleApiClient;
private LocationRequest mLocationRequest;
private static final int REQUEST_PERMISSION = 1;

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

    mGoogleApiClient = new GoogleApiClient.Builder(this).addApi(LocationServices.API).addConnectionCallbacks(this).build();
    txtOutput = (TextView) findViewById(R.id.txtOutput);
}

@Override
protected void onStart(){
    super.onStart();
    mGoogleApiClient.connect();
}

@Override
protected void onStop(){
    mGoogleApiClient.disconnect();
    super.onStop();
}

@Override
public void onConnected(Bundle bundle){
    mLocationRequest = LocationRequest.create();
    mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    mLocationRequest.setInterval(1000).setMaxWaitTime(2000);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        if (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)
            requestPermissions(new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_PERMISSION);
    }
    LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}

@Override
public void onConnectionSuspended(int i){
    Log.i(LOG_TAG, "GoogleApiClient connection has been suspended.");
}

@Override
public void onLocationChanged(Location location){
    Log.i(LOG_TAG, location.toString());
    txtOutput.setText(String.valueOf(location.getLatitude()) +  ", " + String.valueOf(location.getLongitude()));
}

}

我的清单文件：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.android.location1">

    <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"/>
    <uses-feature android:name="android.hardware.location.network"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <meta-data
            android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version"/>

        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

我在android 6和7上测试了这个。在其中任何一个都不起作用。任何帮助将不胜感激。

Answer 1

获取对系统位置管理器的引用

LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

然后注册locationupdates并将其附加到您已经实现的侦听器

locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 3, 1, locationListener);

了解requestlocationsUpdates方法，了解您的位置等等。 https://developer.android.com/reference/android/location/LocationManager.html#requestLocationUpdates

融合位置无法运行Android

1 个答案: