I'm trying to implement a simple code just to show two tabs on Android and later add a content dividing into two activities, one to show examples with IF and another with SWITCH.
I created the XML, where I can check without problems and I also coded correctly in Java, I think.
After compiling, it does not even enter the application, displaying a message that it needs to be terminated. I'm already using Android Studio, is there a compatibility issue?
Below my Java code:
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TabHost tabHost = (TabHost)findViewById(R.id.tabHost);
tabHost.setup();
TabSpec spec1 = tabHost.newTabSpec("IF");
spec1.setContent(R.id.IF);
TabSpec spec2 = tabHost.newTabSpec("SWITCH");
spec2.setContent(R.id.SWITCH);
tabHost.addTab(spec1);
tabHost.addTab(spec2);
}
}
Below XML:
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/tabHost"
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
android:id="@+id/IF"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingTop="60px">
<TextView
android:id="@+id/txt1"
android:layout_width="fill_parent"
android:layout_height="100px"
android:text="Esta e a aba 01" />
</LinearLayout>
<LinearLayout
android:id="@+id/SWITCH"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:paddingTop="60px">
<TextView
android:id="@+id/txt2"
android:layout_width="fill_parent"
android:layout_height="100px"
android:text="Esta e a aba 2" />
</LinearLayout>
</FrameLayout>
</TabHost>
Below error:
12-27 01:24:29.300 30658-30658/com.example.luizhmu.aulas_android_if_switch E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.luizhmu.aulas_android_if_switch, PID: 30658
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.luizhmu.aulas_android_if_switch/com.example.luizhmu.aulas_android_if_switch.MainActivity}: java.lang.IllegalArgumentException: you must specify a way to create the tab indicator.
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: java.lang.IllegalArgumentException: you must specify a way to create the tab indicator.