Question

I want to add edit text above the mapview in android
so I created this layout

<?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"
android:orientation="vertical"
android:id="@+id/base">

<EditText
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:id="@+id/zoomtext"
    >
</EditText>

<com.google.android.maps.MapView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/mapview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:clickable="true"
    android:apiKey="myAPIkey"
    android:layout_below="@+id/zoomtext"/>
</RelativeLayout>

here’s my java code

package zoom.map;

import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;

import android.os.Bundle;
import android.widget.EditText;

public class ZoomapActivity extends MapActivity {
EditText zoombtn;
int angkazoom;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    MapView mapView = (MapView) findViewById(R.id.mapview);
    mapView.setBuiltInZoomControls(true);
    zoombtn = (EditText) findViewById(R.id.zoomtext);
    angkazoom = mapView.getZoomLevel();
    zoombtn.setText(angkazoom);
}

@Override
protected boolean isRouteDisplayed() {
    // TODO Auto-generated method stub
    return false;
}
}

and this is my error log cat

04-18 13:08:37.230: E/AndroidRuntime(309): FATAL EXCEPTION: main
04-18 13:08:37.230: E/AndroidRuntime(309): java.lang.RuntimeException: Unable to start activity ComponentInfo{zoom.map/zoom.map.ZoomapActivity}:    android.content.res.Resources$NotFoundException: String resource ID #0x3
04-18 13:08:37.230: E/AndroidRuntime(309):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
04-18 13:08:37.230: E/AndroidRuntime(309):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
04-18 13:08:37.230: E/AndroidRuntime(309):  at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-18 13:08:37.230: E/AndroidRuntime(309):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-18 13:08:37.230: E/AndroidRuntime(309):  at android.os.Handler.dispatchMessage(Handler.java:99)
04-18 13:08:37.230: E/AndroidRuntime(309):  at android.os.Looper.loop(Looper.java:123)
04-18 13:08:37.230: E/AndroidRuntime(309):  at android.app.ActivityThread.main(ActivityThread.java:4627)
04-18 13:08:37.230: E/AndroidRuntime(309):  at java.lang.reflect.Method.invokeNative(Native Method)
04-18 13:08:37.230: E/AndroidRuntime(309):  at java.lang.reflect.Method.invoke(Method.java:521)
04-18 13:08:37.230: E/AndroidRuntime(309):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-18 13:08:37.230: E/AndroidRuntime(309):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-18 13:08:37.230: E/AndroidRuntime(309):  at dalvik.system.NativeStart.main(Native Method)
04-18 13:08:37.230: E/AndroidRuntime(309): Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x3
04-18 13:08:37.230: E/AndroidRuntime(309):  at android.content.res.Resources.getText(Resources.java:201)
04-18 13:08:37.230: E/AndroidRuntime(309):  at android.widget.TextView.setText(TextView.java:2817)
04-18 13:08:37.230: E/AndroidRuntime(309):  at zoom.map.ZoomapActivity.onCreate(ZoomapActivity.java:21)
04-18 13:08:37.230: E/AndroidRuntime(309):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-18 13:08:37.230: E/AndroidRuntime(309):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
04-18 13:08:37.230: E/AndroidRuntime(309):  ... 11 more

I can’t figure out what’s wrong..
No problem with the layout and I have no error in the java
I’ve searched through stackoverflow and haven’t found the answer yet..

Answer 1

This line

angkazoom = mapView.getZoomLevel();

Is retrieving an integer value.

When calling

zoombtn.setText(angkazoom);

android assumes you are trying to set your text to a String resource ID (an int).. This ID “should” map to a string value.. When it searches for that ID it fails since it doesn’t exist and causes your crash.

If what you want to show is just the zoom level use

zoombtn.setText(angkazoom + "");

to allow your text to show the zoom level in string representation