android-tabhost

问题 I'm building an App which will have a HostTab and will contain two child tabs. I'm not using the .xml for the layout, instead I'm declaring it in the run-time. It is not giving any error during build and was running perfectly in Android 2.3, but in Newer version of Android it is crashing on start. Can anyone help me out in resolving the problem. I'm very new to Android Studio and don't know lot about it.Screen shot when the App is Crashing My Main Activity (TabExpl.jav) Code is as below:

问题 How Can i change the TabHost in android, so it should look same as UITabBarController in iPhone? ie view should be on the top of the TabHost,not at the bottom. 回答1: Here's a sample layout code to have the tabs on the bottom of the screen: <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"

问题 I am trying to place tabs on the bottom of the screen and have each tab display a different activity. However from what I have read you can only use this on phones 3.0+. When most phones I know are around 2.3 this seems a little ridiculous. Anyone have any ideas? 回答1: This can be implemented using the android usual tab,just you have to do is add some extra codes in the xml.I hope this piece of code will help you for getting it done... <TabHost android:layout_width="fill_parent" android:layout

问题 Can some one please assist me in this example of TabHost? The problem i have is, When I am trying to run the application I am getting Null Pointer Exception. Here is the code if some one need to have a look. public class TabBarExample extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); /** * TabHost will have Tabs **/ TabHost tabHost = (TabHost

问题 I wrote this code to have several tabs in my view. The problem is: I've only one tab because I have an exception which says: Did you forget to call public void setup (LocalActivityManager aactivityGroup) My class: MainActivity extends FragmentActivity (I don't use tabactivity because it's deprecated) And my code to have tabs : try { Intent intent = new Intent(this, firstActivity.class); tabHost = (TabHost) findViewById(R.id.tabhost); tabHost.setup(); for (String tab_name : tabs) { tabSpec =

问题 I'm trying to develop a code like when I like on the Add button it will Add the Tab and and there is Del button to Delete the tab..But It work fine for 3 to 4 time but after that it throws the error... and Log-Cat look Like this:- 02-28 16:33:37.832: E/AndroidRuntime(7830): FATAL EXCEPTION: main 02-28 16:33:37.832: E/AndroidRuntime(7830): java.lang.NullPointerException 02-28 16:33:37.832: E/AndroidRuntime(7830): at android.widget.TabWidget.focusCurrentTab(TabWidget.java:461) 02-28 16:33:37

问题 I have problem with initializing TabHost. I need to have in View several Tabs which show different activities: one must show google map, second - log in form. In created code there is error "The method getTabHost() is undefined for the type MapViewDemo" package com.example.android.apis.view; import java.util.List; import android.app.*; import com.example.android.google.apis.R; import com.google.android.maps.GeoPoint; import com.google.android.maps.MapActivity; import com.google.android.maps

问题 I am developing an app, with minimum sdk level 7 and that's why I use support library and ActionBarActivity to have a proper ActionBar, but also the layout of my page contains four tabs on the bottom of the activity, and as i already extend ActionBarActivity, I cannot extend TabActivity. The problem is when I write public class HomePageActivity extends ActionBarActivity { private TabHost mTabHost; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState

问题 I have created an application which contains tab view and dynamic fragments concepts. the code was earlier working fine when when i was switching to different activity on pressing the tabs , but when i converted it to work for fragments, dushhhh.I know working on fragments and activity is two different things , but logic is the same just few changes here there , Here is the code . The main layout is "activity_main.xml" <TabHost xmlns:android="http://schemas.android.com/apk/res/android"

问题 I have a TabHost Activity with three tabs. On the second tab I have a button, clicking which would open a new Activity class (not part of the TabHost). On clicking a button in the new Activity class, it should return to the Tab 2 of the TabHost class but it returns to Tab 1. How should I fix it? Here is the code in my new Activity class: ImageButton btn1 = (ImageButton)findViewById(R.id.close); btn1.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //