如何检查 Android 应用中的位置服务是否已启用?
androidapps/applicationsmobile development更新于 2026/2/15 12:37:17
此示例演示了如何检查 Android 应用中的位置服务是否已启用。
步骤 1 − 在 Android Studio 中创建一个新项目，前往"文件"->"新建项目"，并填写所有必填信息以创建新项目。
步骤 2 − 将以下代码添加到 res/layout/activity_main.java
<? xml version= "1.0" encoding= "utf-8" ?> <RelativeLayout xmlns: android = "http://schemas.android.com/apk/res/android" xmlns: tools = "http://schemas.android.com/tools" android :layout_width= "match_parent" android :layout_height= "match_parent" android :layout_margin= "16dp" tools :context= ".MainActivity" > <Button android :id= "@+id/button" android :layout_width= "match_parent" android :layout_height= "wrap_content" android :text= "Enable Location" /> </RelativeLayout>
步骤 3 − 将以下代码添加到 src/MainActivity.java
package app.tutorialspoint.com.sample ;
import android.content.Context ;
import android.content.DialogInterface ;
import android.content.Intent ;
import android.location.LocationManager ;
import android.os.Bundle ;
import android.provider.Settings ;
import android.support.v7.app.AlertDialog ;
import android.support.v7.app.AppCompatActivity ;
import android.view.View ;
import android.widget.Button ;
import android.widget.TextView ;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate (Bundle savedInstanceState) {
super .onCreate(savedInstanceState) ;
setContentView(R.layout. activity_main ) ;
Button button = findViewById(R.id. button ) ;
button.setOnClickListener( new View.OnClickListener() {
@Override
public void onClick (View v) {
locationEnabled() ;
}
}) ;
}
private void locationEnabled () {
LocationManager lm = (LocationManager)
getSystemService(Context. LOCATION_SERVICE ) ;
boolean gps_enabled = false;
boolean network_enabled = false;
try {
gps_enabled = lm.isProviderEnabled(LocationManager. GPS_PROVIDER ) ;
} catch (Exception e) {
e.printStackTrace() ;
}
try {
network_enabled = lm.isProviderEnabled(LocationManager. NETWORK_PROVIDER ) ;
} catch (Exception e) {
e.printStackTrace() ;
}
if (!gps_enabled && !network_enabled) {
new AlertDialog.Builder(MainActivity. this )
.setMessage( "GPS Enable" )
.setPositiveButton( "Settings" , new
DialogInterface.OnClickListener() {
@Override
public void onClick (DialogInterface paramDialogInterface , int paramInt) {
startActivity( new Intent(Settings. ACTION_LOCATION_SOURCE_SETTINGS )) ;
}
})
.setNegativeButton( "Cancel" , null )
.show() ;
}
}
}
步骤 4 − 将以下代码添加到 androidManifest.xml
<? xml version= "1.0" encoding= "utf-8" ?> <manifest xmlns: android = "http://schemas.android.com/apk/res/android" package= "app.tutorialspoint.com.sample" > <uses-permission android :name= "android.permission.ACCESS_FINE_LOCATION" /> <uses-permission android :name= "android.permission.ACCESS_COARSE_LOCATION" /> <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" > <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>
让我们尝试运行您的应用程序。假设您已将实际的 Android 移动设备连接到电脑。要从 Android Studio 运行该应用程序，请打开项目的某个活动文件，然后点击工具栏上的"运行"
图标。选择您的移动设备作为选项，然后勾选将显示默认屏幕的移动设备。 –
