For a project i want to use a CSV file to add markers. The content in the info window is based on a CSV file like this:
x_coordinate y_coordinate title description
52.3494703659177 4.63031105906557 m_1 beautifull
52.3494703659177 4.63031105906557 m_2 Awfull
At this point i can add the markers to the map and add the title and description to the info window but i can't manage to add a image based on the CSV file. The name of the image is the same as the id. So, if the title is m_1 i want to add image with the name m_1 to the info window.
I though i could override the existing source of the image but this doens't work due the fact that the app crash when i push one of the markers in the app. The code is as following:
public void onMapReady(GoogleMap googlemap) {
mMap = googlemap;
if (mMap != null) {
mMap.setInfoWindowAdapter(new GoogleMap.InfoWindowAdapter() {
@Override
public View getInfoWindow(Marker marker) {
View v = getLayoutInflater().inflate(R.layout.infow_window, null);
TextView tvHaarlem = (TextView) v.findViewById(R.id.tvHaarlem);
TextView tvSnippet = (TextView) v.findViewById(R.id.tvNoord_Holland);
String image_id = new String(marker.getTitle());
int resID = getResources().getIdentifier(image_id, "drawable", "package.name");
ImageView img= (ImageView) findViewById(R.id.map_image);
img.setImageResource(R.drawable.m_1);
LatLng ll = marker.getPosition();
tvHaarlem.setText(marker.getTitle());
tvSnippet.setText(marker.getSnippet());
return v;
}
@Override
public View getInfoContents(Marker marker) {
return null;
}
});
mMap.setOnInfoWindowClickListener(new GoogleMap.OnInfoWindowClickListener() {
@Override
public void onInfoWindowClick(Marker marker) {
Intent intent = new Intent(maps.this, MainActivity.class);
startActivity(intent);
}
});
}
InputStream instream = getResources().openRawResource(R.raw.points_in_map);
InputStreamReader inputreader = new InputStreamReader(instream);
BufferedReader reader = new BufferedReader(inputreader);
List<LatLng> latLngList = new ArrayList<LatLng>();
String line = "";
try {
while ((line = reader.readLine()) != null) // Read until end of file
{
double lat = Double.parseDouble(line.split(",")[1]);
double lon = Double.parseDouble(line.split(",")[2]);
String title_marker = new String(line.split(",")[3]);
String description_marker = new String(line.split(",")[4]);
LatLng pos = new LatLng(lat, lon);
//coordinates too map
mMap.addMarker(new MarkerOptions()
.title(String.valueOf(title_marker))
.snippet(String.valueOf(description_marker))
.position(pos));
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
The xml of the info window is as following:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
>
<ImageView
android:id="@+id/map_image"
android:layout_width="100dp"
android:layout_height="100dp"
android:src="@mipmap/ic_welgelegen"/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:onClick="sendmessage">
<TextView
android:id="@+id/tvHaarlem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
android:textStyle="bold" />
<TextView
android:id="@+id/tvNoord_Holland"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAlignment="center"/>
</LinearLayout>
</LinearLayout>
add this point i m pretty clueless what to do. I also tried to create a new image view in the info window but this wouldn't work either.
the error i get in log cat is:
03-17 13:48:58.097 9689-9689/com.diovae.berend.layout_legend E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.diovae.berend.layout_legend, PID: 9689
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setImageResource(int)' on a null object reference
at com.diovae.berend.layout_legend.maps$1.getInfoWindow(maps.java:63)
at com.google.android.gms.maps.GoogleMap$7.zzh(Unknown Source)
at com.google.android.gms.maps.internal.zzd$zza.onTransact(Unknown Source)
at android.os.Binder.transact(Binder.java:499)
at com.google.android.gms.maps.internal.p.a(:com.google.android.gms.DynamiteModulesB:94)
at com.google.maps.api.android.lib6.impl.by.a(:com.google.android.gms.DynamiteModulesB:89)
at com.google.maps.api.android.lib6.impl.by.a(:com.google.android.gms.DynamiteModulesB:124)
at com.google.maps.api.android.lib6.gmm6.api.e.a(:com.google.android.gms.DynamiteModulesB:188)
at com.google.maps.api.android.lib6.gmm6.api.g.c(:com.google.android.gms.DynamiteModulesB:200)
at com.google.maps.api.android.lib6.impl.db.g(:com.google.android.gms.DynamiteModulesB:23225)
at com.google.maps.api.android.lib6.impl.dd.b(:com.google.android.gms.DynamiteModulesB:304)
at com.google.maps.api.android.lib6.gmm6.api.e.a(:com.google.android.gms.DynamiteModulesB:242)
at com.google.maps.api.android.lib6.gmm6.vector.m.a(:com.google.android.gms.DynamiteModulesB:4070)
at com.google.maps.api.android.lib6.gmm6.vector.af.c(:com.google.android.gms.DynamiteModulesB:611)
at com.google.maps.api.android.lib6.gmm6.vector.df.onSingleTapConfirmed(:com.google.android.gms.DynamiteModulesB:236)
at com.google.maps.api.android.lib6.impl.gesture.g.onSingleTapConfirmed(:com.google.android.gms.DynamiteModulesB:189)
at com.google.maps.api.android.lib6.impl.gesture.i.handleMessage(:com.google.android.gms.DynamiteModulesB:132)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6123)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)
On your getInfoWindow method replace
ImageView img= (ImageView) findViewById(R.id.map_image);
with this:
ImageView img= (ImageView) v.findViewById(R.id.map_image);