Android 定位服务启动问题

Question

它的设想是在需要时打开定位，在不需要时关闭定位。当我点击打开定位服务时，我的定位服务出现问题，它显示“应用程序已停止”，请在下面找到我的 logcat。任何帮助都非常感谢。谢谢你

E/AndroidRuntime: FATAL EXCEPTION: main
              Process: com.kenpar.dmsassign2, PID: 21749
              java.lang.SecurityException: Permission Denial: not allowed to send broadcast android.location.GPS_ENABLED_CHANGE from pid=21749, uid=10184
                  at android.os.Parcel.readException(Parcel.java:1472)
                  at android.os.Parcel.readException(Parcel.java:1426)
                  at android.app.ActivityManagerProxy.broadcastIntent(ActivityManagerNative.java:2640)
                  at android.app.ContextImpl.sendBroadcast(ContextImpl.java:1499)
                  at android.content.ContextWrapper.sendBroadcast(ContextWrapper.java:377)
                  at com.kenpar.dmsassign2.LocationActivity$1.onClick(LocationActivity.java:30)
                  at android.view.View.performClick(View.java:4633)
                  at android.view.View$PerformClick.run(View.java:19274)
                  at android.os.Handler.handleCallback(Handler.java:733)
                  at android.os.Handler.dispatchMessage(Handler.java:95)
                  at android.os.Looper.loop(Looper.java:146)
                  at android.app.ActivityThread.main(ActivityThread.java:5593)
                  at java.lang.reflect.Method.invokeNative(Native Method)
                  at java.lang.reflect.Method.invoke(Method.java:515)
                  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
                  at dalvik.system.NativeStart.main(Native Method)
                  Application terminated.

位置java代码：

public class LocationActivity extends Activity {
Button onLoc;
Button offLoc;


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

    onLoc = (Button)findViewById(R.id.onLoc);
    offLoc = (Button)findViewById(R.id.offLoc);

    onLoc.setOnClickListener(new OnClickListener(){
        public void onClick (View view){
            Intent intent = new Intent ("android.location.GPS_ENABLED_CHANGE");
            intent.putExtra("enabled", true);
            sendBroadcast(intent);
        }
    });

    offLoc.setOnClickListener(new OnClickListener(){
        public void onClick (View view){
        Intent intent = new Intent("android.location.GPS_ENABLED_CHANGE");
        intent.putExtra("enabled", false);
        sendBroadcast(intent);
        }
    });
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.location, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
    }
}

Answer 1

在 Android 4.4 及更高版本上，您无法手动打开和关闭位置服务。它会抛出一个securityException 并且只能手动完成。您可以做什么，当需要定位服务时，您可以通过触发此意图将用户移动到定位服务设置屏幕：

startActivity(context, new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS));