我有三个活动,其中一个有地图片段,它就是启动活动。我正在尝试使用TabHost来浏览它们。我的问题是,当尝试使用addTab()添加标签时,应用程序崩溃了。 logcat说“无法启动活动ComponentInfo ......”。
这是我的主要活动,它有一个地图片段(tabhost代码来自另一个教程): 公共类MainActivity扩展TabActivity {
private GoogleMap map;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
db =new DBHelper(this);
// get the reference of the map view
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
.getMap();
// enable map to have the current location
map.setMyLocationEnabled(true);
map.setMapType(1);
//make marker to point to the main festival area, set title and subtitle
Marker festArea = map.addMarker(new MarkerOptions().position(FESTIVAL_AREA)
.title("Panther Plaza").snippet("Main location"));
//go to the festival area
map.moveCamera(CameraUpdateFactory.newLatLngZoom(FESTIVAL_AREA,1));
//zoom this much to the festival area
map.animateCamera(CameraUpdateFactory.zoomTo(18), 2000, null);
TabHost tabHost = getTabHost();
// Tab for Photos
TabHost.TabSpec photospec = tabHost.newTabSpec("Photos");
// setting Title and Icon for the Tab
photospec.setIndicator("Songs");
Intent photosIntent = new Intent(this, ProgramMainActivity.class);
photospec.setContent(photosIntent);
// Tab for Songs
TabHost.TabSpec songspec = tabHost.newTabSpec("Songs");
songspec.setIndicator("Songs");
Intent songsIntent = new Intent(this, FITInternationalFestMainActivity.class);
songspec.setContent(songsIntent);
// Adding all TabSpec to TabHost
//this is not working
tabHost.addTab(photospec); // Adding photos tab
tabHost.addTab(songspec); // Adding songs tab
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.avtitiy_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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
这是我的activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".MainActivity">
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment"
tools:layout="@layout/activity_main" />
<ImageView
android:id="@+id/currentLocation"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="400dp"
android:onClick="toCurrentLocation"
android:src="@drawable/location" />
<ImageView
android:id="@+id/carLocation"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="420dp"
android:layout_marginLeft="60dp"
android:onClick="myCarParking"
android:src="@drawable/car" />
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
</LinearLayout>
</TabHost>
我正在努力解决这个问题,我无法让它发挥作用,应用总是失败。
这是logcat:
11-30 07:13:01.395 24345-24345/ E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: edu.fit.alharbia2013.fitinternationalfest, PID: 24345
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.company.user.mainactivity/com.company.user.myfestival.MainActivity}: android.content.res.Resources$NotFoundException: Resource ID #0x0
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2184)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.content.res.Resources$NotFoundException: Resource ID #0x0
at android.content.res.Resources.getValue(Resources.java:1123)
at android.content.res.Resources.loadXmlResourceParser(Resources.java:2309)
at android.content.res.Resources.getLayout(Resources.java:939)
at android.view.LayoutInflater.inflate(LayoutInflater.java:395)
at android.widget.TabHost$LabelIndicatorStrategy.createIndicatorView(TabHost.java:598)
at android.widget.TabHost.addTab(TabHost.java:227)
at com.company.user.mainactivity.MyFestival.onCreate(MainActivity.java:112)
at android.app.Activity.performCreate(Activity.java:5231)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148)at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)