OK, I must be overlooking something because I am unable to get my
TabHost to display in my Activity class. I am getting the dreaded
force close when I try to run the app. It will work if I extend
TabActivity, but I can't do that [details at the bottom] because once
I move the code from my prototype project its going to be in a custom
class that inherits from Activity.
Here is the XML layout:
<?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">
<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>
And here is the class that is trying to create and display the
TabHost:
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.widget.TabHost;
public class my_proto extends Activity
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
Log.i(this.toString(), "OnCreate");
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Log.i(this.toString(), "get tab host");
TabHost host = (TabHost)findViewById(R.id.tabhost);
host.setup();
Log.i(this.toString(), "add tabs");
host.addTab(host.newTabSpec("one")
.setIndicator("First Results")
.setContent(new Intent(this,
FirstResultsListViewActivity.class)));
host.addTab(host.newTabSpec("two")
.setIndicator("Second Results")
.setContent(new Intent(this,
SecondResultsListViewActivity.class)));
Log.i(this.toString(), "adjust tab size");
host.getTabWidget().getChildAt(0).getLayoutParams().height =
35;
host.getTabWidget().getChildAt(1).getLayoutParams().height =
35;
}// end onCreate
}// end class my_proto
This is the error I get in the log.
11-17 16:49:51.271: INFO/com.my_proto.my_pr...@43b80b50(1302):
OnCreate
11-17 16:49:51.472: INFO/com.my_proto.my_pr...@43b80b50(1302): get
tab host
11-17 16:49:51.480: INFO/com.my_proto.my_pr...@43b80b50(1302): add
tabs
11-17 16:49:51.521: DEBUG/AndroidRuntime(1302): Shutting down VM
11-17 16:49:51.521: WARN/dalvikvm(1302): threadid=3: thread
exiting with uncaught exception (group=0x4001b188)
11-17 16:49:51.530: ERROR/AndroidRuntime(1302): Uncaught handler:
thread main exiting due to uncaught exception
11-17 16:49:51.552: ERROR/AndroidRuntime(1302):
java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.my_proto/com.my_proto.my_proto}:
java.lang.IllegalStateException: Did you forget to call 'public void
setup(LocalActivityManager activityGroup)'?
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2496)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:
2512)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
android.app.ActivityThread.access$2200(ActivityThread.java:119)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
android.os.Handler.dispatchMessage(Handler.java:99)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
android.os.Looper.loop(Looper.java:123)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
android.app.ActivityThread.main(ActivityThread.java:4363)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
java.lang.reflect.Method.invokeNative(Native Method)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
java.lang.reflect.Method.invoke(Method.java:521)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:860)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
dalvik.system.NativeStart.main(Native Method)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): Caused by:
java.lang.IllegalStateException: Did you forget to call 'public void
setup(LocalActivityManager activityGroup)'?
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
android.widget.TabHost
$IntentContentStrategy.getContentView(TabHost.java:646)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
android.widget.TabHost.setCurrentTab(TabHost.java:320)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
android.widget.TabHost.addTab(TabHost.java:213)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
com.mc_proto.mc_proto.onCreate(my_proto.java:29)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:
1047)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
2459)
11-17 16:49:51.552: ERROR/AndroidRuntime(1302): ... 11 more
Its complaining about not calling setup, but I am calling it. There
is another version of setup that needs some kind of
LocalActivityMananger. I have tried replacing the call to setup the
call below but no luck.
LocalActivityManager mLocalActivityManager = new
LocalActivityManager(this, false);
host.setup(mLocalActivityManager);
[edit] The call above didn't work so I took it back out. Although I
was getting a new error logged.
11-17 20:24:58.382: ERROR/AndroidRuntime(1432):
java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.my_proto/com.my_proto.my_proto}:
java.lang.IllegalStateException: Activities can't be added until the
containing group has been created.
I can't inherit from TabActivity. Once I have the prototype working I
need to port this into an existing app's screen that inherits from
Activity. I will need to load the TabHost into a Layout within that
Activity. It will basically be a LinearLayout with a row of status
icons, followed my a LinearLayout with the Tabhost in it. I know that
if I can get this working I can move onto the next phase. Thanks!
---------------------------
| status icons |
---------------------------
| Tab, Tab, Tab |
| |
| |
| |
---------------------------
| status icons |
---------------------------
--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
