All geek questions in one place

Android MapView does not load unless you touch the map

I added mapview to my android app. I used the correct settings in the manifest and now I have a problem. When I go to the place where I have the map, only the canvas is displayed, but not the map. If I touch it, it starts loading. Even then, it does not fully load. It only loads to a certain level. If I continue to touch the screen, it constantly loads. But even then I cannot increase or decrease OR I cannot even move the map. Is there a solution for this? Did I do something wrong?

My code

MapView mapView; GoogleMap map; mapView = (MapView)view.findViewById(R.id.map); Bundle savedInstanceState = null; mapView.onCreate(savedInstanceState); // Gets to GoogleMap from the MapView and does initialization stuff map = mapView.getMap(); map.getUiSettings().setMyLocationButtonEnabled(false); map.setMyLocationEnabled(true); MapsInitializer.initialize(activity); double lat; double lon; lat = Double.parseDouble(theaterDetail.getLatitude()); lon = Double.parseDouble(theaterDetail.getLongitude()); // Updates the location and zoom of the MapView map.addMarker(new MarkerOptions().position( new LatLng(lat, lon)).title(theaterDetail.getAddress())); final LatLng THEATER_POSITION = new LatLng(lat, lon); CameraPosition cameraPosition = new CameraPosition.Builder() .target(THEATER_POSITION) // Sets the center of the map to // THEATER_POSITION .zoom(10) // Sets the zoom .bearing(360) // Sets the orientation of the camera to east .tilt(30) // Sets the tilt of the camera to 30 degrees .build(); // Creates a CameraPosition from the builder map.animateCamera(CameraUpdateFactory .newCameraPosition(cameraPosition));

XML

 <com.google.android.gms.maps.MapView android:id="@+id/map" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="1"/>

manifest

 <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.***.***" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="18" /> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> <uses-feature android:glEsVersion="0x00020000" android:required="true" /> <permission android:name="com.***.***.permission.MAPS_RECEIVE" android:protectionLevel="signature" /> <uses-permission android:name="com.***.***.permission.MAPS_RECEIVE" /> <application android:name="com.***.***.service.CommonVariable" android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppBaseTheme" android:hardwareAccelerated="true" > <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" /> <!-- <uses-library android:name="com.google.android.maps" /> --> <activity android:name="com.***.***.MainActivity" android:label="@string/app_name" android:theme="@style/Theme.Sherlock.Light.DarkActionBar" android:windowSoftInputMode="adjustPan" android:hardwareAccelerated="true"> </activity> <activity android:name="com.***.***.Map" android:label="@string/app_name" android:theme="@style/Theme.Sherlock.Light.DarkActionBar" ></activity> <activity android:name="com.***.***.WelcomeActivity" android:label="@string/app_name" android:theme="@style/Theme.Sherlock.NoActionBar" android:hardwareAccelerated="true" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="*********************" /> </application> </manifest>
+5
source share
2 answers

Java file

 package com.dilip.googlemapsv2; import com.google.android.gms.common.GooglePlayServicesUtil; import com.google.android.gms.maps.GoogleMap; import com.google.android.gms.maps.MapFragment; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.view.Menu; import android.view.MenuItem; import android.widget.Toast; public class MainActivity extends FragmentActivity { // Google Map private GoogleMap googleMap; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); try { // Loading map initilizeMap(); } catch (Exception e) { e.printStackTrace(); } } /** * function to load map. If map is not created it will create it for you * */ private void initilizeMap() { if (googleMap == null) { //googleMap = ((MapFragment)getFragmentManager().findFragmentById(R.id.map)).getMap(); googleMap = ((MapFragment)getFragmentManager().findFragmentById(R.id.map)).getMap(); // check if map is created successfully or not if (googleMap == null) { Toast.makeText(getApplicationContext(),"Sorry! unable to create maps", Toast.LENGTH_SHORT).show(); } } } @Override public void onResume() { super.onResume(); GooglePlayServicesUtil.isGooglePlayServicesAvailable(this.getApplicationContext()); initilizeMap(); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, 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); } }

Page XML

 <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" > <fragment android:id="@+id/map" android:name="com.google.android.gms.maps.MapFragment" android:layout_width="match_parent" android:layout_height="match_parent"/> </RelativeLayout>

Mainfest File

 <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.dilip.googlemapsv2" android:versionCode="1" android:versionName="1.0" > <permission android:name="com.dilip.googlemapsv2.permission.MAPS_RECEIVE" android:protectionLevel="signature" /> <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="20" /> <uses-permission android:name="com.dilip.googlemapsv2.permission.MAPS_RECEIVE" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" /> <uses-feature android:glEsVersion="0x00020000" android:required="true"/> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <!-- Goolge API Key --> <meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="xxxxxxxxxxxxxxxxxxxxxxxxxxx" /> /* Added Bi Dilip */ <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" /> </application> </manifest>
0
source

Although this is an old question, I am providing here what worked for me. The reason for this solution is that it overrides the onResume () handler. If you are using mapView, you need to call mapView.onResume () from the onResume () handler. Example:

 @Override public void onResume() { mMapView.onResume(); super.onResume(); }
+19
source

Source: https://habr.com/ru/post/1210884/

More articles:


All Articles