java - 使用自定义 Activity 时 TabHost 崩溃

Question

所以我通过拖放制作了一个 TabHot，然后将其编码到选项卡中以使其工作并且它工作了。但是我不得不为不方便的内容使用制表符线性布局。所以我决定为每个选项卡制作一个单独的 Activity 。现在，当我将设置内容更改为类的 Intent 时，我的项目崩溃了。我用谷歌搜索了这个并寻找修复方法，但一无所获。

这是我的代码:

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    InitTabHost();
}

private void InitTabHost(){

    //Setup Initial Tab Host
    TabHost tbHost = (TabHost)findViewById(R.id.tabHost);
    tbHost.setup();

    //Setup Tab 1

    TabHost.TabSpec NFtab = tbHost.newTabSpec("one");
    NFtab.setIndicator("News Feed");
    Intent intent = new Intent(this,NewsFeed.class);
    NFtab.setContent(intent);
    tbHost.addTab(NFtab);

    TabHost.TabSpec AGTab = tbHost.newTabSpec("two");
    AGTab.setIndicator("Art Gallery");
    AGTab.setContent(R.id.tab2);
    tbHost.addTab(AGTab);

    TabHost.TabSpec CreateTab = tbHost.newTabSpec("three");
    CreateTab.setIndicator("Create");
    CreateTab.setContent(R.id.tab3);
    tbHost.addTab(CreateTab);

    TabHost.TabSpec ProfileTab = tbHost.newTabSpec("Four");
    ProfileTab.setIndicator("Profile");
    ProfileTab.setContent(R.id.tab4);
    tbHost.addTab(ProfileTab);
}}

这是我使用 tabhost 的主要布局:

<?xml version="1.0" encoding="utf-8"?>

<TabHost
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/tabHost">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <TabWidget
            android:id="@android:id/tabs"
            android:layout_alignParentBottom="true"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            />

        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <LinearLayout
                android:id="@+id/tab1"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical">

            </LinearLayout>

            <LinearLayout
                android:id="@+id/tab2"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical">

            </LinearLayout>

            <LinearLayout
                android:id="@+id/tab3"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical">

            </LinearLayout>

            <LinearLayout
                android:id="@+id/tab4"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical">

            </LinearLayout>
        </FrameLayout>
    </RelativeLayout>
</TabHost>

这是另一个 Activity 类:

public class NewsFeed extends TabActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_news_feed);
}}

编辑 Logcat:

07/28 01:56:29: Launching app
$ adb shell am start -n "com.example.akashbakshi.artnsketch/com.example.akashbakshi.artnsketch.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Connected to process 3940 on device Nexus_6P_API_23 [emulator-5554]
I/art: Not late-enabling -Xcheck:jni (already on)
W/System: ClassLoader referenced unknown path: /data/app/com.example.akashbakshi.artnsketch-2/lib/x86
W/System: ClassLoader referenced unknown path: /data/app/com.example.akashbakshi.artnsketch-2/lib/x86
W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
                  Process: com.example.akashbakshi.artnsketch, PID: 3940
                  java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.akashbakshi.artnsketch/com.example.akashbakshi.artnsketch.MainActivity}: java.lang.IllegalStateException: Did you forget to call 'public void setup(LocalActivityManager activityGroup)'?
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
                      at android.app.ActivityThread.-wrap11(ActivityThread.java)
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
                      at android.os.Handler.dispatchMessage(Handler.java:102)
                      at android.os.Looper.loop(Looper.java:148)
                      at android.app.ActivityThread.main(ActivityThread.java:5417)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
                   Caused by: java.lang.IllegalStateException: Did you forget to call 'public void setup(LocalActivityManager activityGroup)'?
                      at android.widget.TabHost$IntentContentStrategy.getContentView(TabHost.java:722)
                      at android.widget.TabHost.setCurrentTab(TabHost.java:388)
                      at android.widget.TabHost.addTab(TabHost.java:222)
                      at com.example.akashbakshi.artnsketch.MainActivity.InitTabHost(MainActivity.java:30)
                      at com.example.akashbakshi.artnsketch.MainActivity.onCreate(MainActivity.java:15)
                      at android.app.Activity.performCreate(Activity.java:6237)
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
                      at android.app.ActivityThread.-wrap11(ActivityThread.java) 
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
                      at android.os.Handler.dispatchMessage(Handler.java:102) 
                      at android.os.Looper.loop(Looper.java:148) 
                      at android.app.ActivityThread.main(ActivityThread.java:5417) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

Answer 1

点击此链接:Your content must have a TabHost whose id attribute is 'android.R.id.tabhost'

我能够通过将我的 tabhost 更改为 android:id/tabhost 并将我的 NewsFeed 更改为 Activity 来解决问题。