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我正在嘗試使搜索位置功能和地圖類型更改功能在我的android google maps api應用上工作，但是當我點擊與搜索和地圖相關的按鈕時更改應用程序停止運行。 按鈕和功能的佈局很好地實現，我看不到錯誤在哪裏。有誰知道缺少什麼使這兩個功能正常工作？搜索位置和地圖類型功能不起作用
Manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.dborahramos.myapplication">
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="AIzaSyBVCTEWR6ifov2W_9itWuUfBvptd8MoA7U" />
<activity
android:name=".MapsActivity"
android:label="@string/title_activity_maps">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Here is activity maps:
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<EditText
android:layout_width="130dp"
android:layout_height="wrap_content"
android:id="@+id/TFaddress" />
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Search"
android:id="@+id/Bsearch"
android:layout_gravity="right"
android:onClick="onSearch" />
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Map Type"
android:id="@+id/Btype"
android:layout_gravity="right"
android:nestedScrollingEnabled="false"
android:onClick="changeType" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="320dp"
android:layout_height="450dp" android:id="@+id/map" tools:context=".MapsActivity"
android:name="com.google.android.gms.maps.SupportMapFragment" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="^"
android:id="@+id/Bzoomin"
android:onClick="onZoom" />
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="v"
android:id="@+id/Bzoomout"
android:layout_gravity="center_vertical"
android:onClick="onZoom" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
And here are search location and map type functions on maps activity.java.
public void onSearch(View view)
{
EditText location_tf = (EditText)findViewById(R.id.TFaddress);
String location = location_tf.getText().toString();
List<Address> addressList = null;
if(location != null || !location.equals(""))
{
Geocoder geocoder = new Geocoder(this);
try {
addressList = geocoder.getFromLocationName(location , 1);
} catch (IOException e) {
e.printStackTrace();
}
Address address = addressList.get(0);
LatLng latLng = new LatLng(address.getLatitude() , address.getLongitude());
mMap.addMarker(new MarkerOptions().position(latLng).title("Marker"));
mMap.animateCamera(CameraUpdateFactory.newLatLng(latLng));
}
}
public void changeType(View view)
{
if(mMap.getMapType() == GoogleMap.MAP_TYPE_NORMAL)
{
mMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
}
else
mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
}