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我一直在嘗試使用谷歌地圖片段。該項目工作正常,沒有我試圖爲每個標記添加的自定義信息窗口,但是當我添加信息窗口時,我得到了一個NullPointerException。如下所示:java.lang.RuntimeException:無法在Google地圖上啓動活動ComponentInfo活動
FATAL EXCEPTION: main
Process: com.couchbase.grocerysync, PID: 6820
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.couchbase.grocerysync/com.couchbase.grocerysync.MapsActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.android.gms.maps.SupportMapFragment.getMapAsync(com.google.android.gms.maps.OnMapReadyCallback)' on a null object reference
下面是佈局文件:
<com.couchbase.grocerysync.MapWrapperLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/map_relative_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<AutoCompleteTextView
android:id="@+id/autoCompleteTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:layout_weight="1.06"
android:text="Please enter your place" >
<requestFocus />
</AutoCompleteTextView>
<Button
android:id="@+id/Bsearch"
style="?android:attr/buttonStyleSmall"
android:layout_width="90dp"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:onClick="onSearch"
android:text="Search" />
</LinearLayout>
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />
這是setUpMapIfNeeded()方法,從的onCreate和其中出現錯誤稱爲:
private void setUpMapIfNeeded() {
if (mMap == null) {
AutoCompleteTextView autoCompView = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView);
autoCompView.setAdapter(new GooglePlacesAutocompleteAdapter(this, R.layout.list_item));
autoCompView.setOnItemClickListener(this);
// Try to obtain the map from the SupportMapFragment.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this); //here is the error!
// Check if we were successful in obtaining the map.
if (mMap != null) {
setUpMap();
}
}
}
任何幫助將不勝感激!
你可以發佈你的java代碼嗎? –
我剛纔編輯了我的問題 –