在一个页面中包含抽屉式导航和TabHost这种情况下，你要它下发展下FragmentActivity是通过的setContentView tabhost.xml
公共类AppMainTabActivity扩展FragmentActivity { /*您接头主机*/
private TabHost mTabHost;
public PopupMenu popupMenu;
/* A HashMap of stacks, where we use tab identifier as keys.. */
private HashMap<String, Stack<Fragment>> mStacks;
/* Save current tabs identifier in this.. */
private String mCurrentTab;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tabhost);
mStacks = new HashMap<String, Stack<Fragment>>();
mStacks.put("TAB1", new Stack<Fragment>());
mStacks.put("TAB2", new Stack<Fragment>());
mStacks.put("TAB3", new Stack<Fragment>());
mTabHost = (TabHost) findViewById(android.R.id.tabhost);
mTabHost.setup();
mTabHost.setOnTabChangedListener(listener);
initializeTabs();
}
private View createTabView(int a) {
View view = LayoutInflater.from(this).inflate(R.layout.tab_indicator,null);
RelativeLayout rl = (RelativeLayout) view.findViewById(R.id.rl_snehasis);
ImageView imageView = (ImageView) view.findViewById(R.id.img_tringle);
TextView textView = (TextView) view.findViewById(R.id.title);
textView.setTextColor(Color.WHITE);
if (a == 1)
textView.setText("TAB1");
else if (a == 2)
textView.setText("TAB2");
else if (a == 3)
textView.setText("TAB3");
return view;
}
public void initializeTabs() {
/* Setup your tab icons and content views.. Nothing special in this.. */
TabHost.TabSpec spec = mTabHost.newTabSpec("TAB1");
mTabHost.setCurrentTab(-3);
spec.setContent(new TabHost.TabContentFactory() {
public View createTabContent(String tag) {
return findViewById(R.id.realtabcontent);
}
});
spec.setIndicator(createTabView(1));
mTabHost.addTab(spec);
spec = mTabHost.newTabSpec("TAB2");
spec.setContent(new TabHost.TabContentFactory() {
public View createTabContent(String tag) {
return findViewById(R.id.realtabcontent);
}
});
spec.setIndicator(createTabView(2));
mTabHost.addTab(spec);
spec = mTabHost.newTabSpec("TAB3");
spec.setContent(new TabHost.TabContentFactory() {
public View createTabContent(String tag) {
return findViewById(R.id.realtabcontent);
}
});
spec.setIndicator(createTabView(3));
mTabHost.addTab(spec);
}
/* Comes here when user switch tab, or we do programmatically */
TabHost.OnTabChangeListener listener = new TabHost.OnTabChangeListener() {
public void onTabChanged(String tabId) {
/* Set current tab.. */
mCurrentTab = tabId;
for (int i = 0; i < mTabHost.getTabWidget().getChildCount(); i++) {
View view = mTabHost.getTabWidget().getChildAt(i);
view.setBackgroundColor(Color.parseColor("#a9a5a6"));
}
View view_selected = mTabHost.getTabWidget().getChildAt(
mTabHost.getCurrentTab());
view_selected.setBackgroundColor(Color.parseColor("#17324f"));
if (mStacks.get(tabId).size() == 0) {
/*
* First time this tab is selected. So add first fragment of
* that tab. Dont need animation, so that argument is false. We
* are adding a new fragment which is not present in stack. So
* add to stack is true.
*/
if (tabId.equals("TAB1") {
pushFragments(tabId, new T1_A(), false, true);
} else if (tabId.equals("TAB2")) {
pushFragments(tabId, new T2_A(), false, true);
} else if (tabId.equals("TAB3")) {
pushFragments(tabId, new T3_A(), false, true);
}
} else {
/*
* We are switching tabs, and target tab is already has atleast
* one fragment. No need of animation, no need of stack pushing.
* Just show the target fragment
*/
pushFragments(tabId, mStacks.get(tabId).lastElement(), false,
false);
}
}
};
/*
* Might be useful if we want to switch tab programmatically, from inside
* any of the fragment.
*/
public void setCurrentTab(int val) {
mTabHost.setCurrentTab(val);
}
/*
* To add fragment to a tab. tag -> Tab identifier fragment -> Fragment to
* show, in tab ident ified by tag shouldAnimate -> should animate
* transaction. false when we switch tabs, or adding first fragment to a tab
* true when when we are pushing more fragment into navigation stack.
* shouldAdd -> Should add to fragment navigation stack (mStacks.get(tag)).
* false when we are switching tabs (except for the first time) true in all
* other cases.
*/
public void pushFragments(String tag, Fragment fragment,
boolean shouldAnimate, boolean shouldAdd) {
if (shouldAdd)
mStacks.get(tag).push(fragment);
FragmentManager manager = getSupportFragmentManager();
FragmentTransaction ft = manager.beginTransaction();
if (shouldAnimate)
ft.setCustomAnimations(R.anim.slide_in_right, R.anim.slide_out_left);
ft.replace(R.id.realtabcontent, fragment);
ft.commit();
}
public void popFragments() {
/*
* Select the second last fragment in current tab's stack.. which will
* be shown after the fragment transaction given below
*/
Fragment fragment = mStacks.get(mCurrentTab).elementAt(
mStacks.get(mCurrentTab).size() - 2);
/* pop current fragment from stack.. */
mStacks.get(mCurrentTab).pop();
/*
* We have the target fragment in hand.. Just show it.. Show a standard
* navigation animation
*/
FragmentManager manager = getSupportFragmentManager();
FragmentTransaction ft = manager.beginTransaction();
ft.setCustomAnimations(R.anim.slide_in_left, R.anim.slide_out_right);
ft.replace(R.id.realtabcontent, fragment);
ft.commit();
}
@Override
public void onBackPressed() {
if (((BaseFragment) mStacks.get(mCurrentTab).lastElement())
.onBackPressed() == false) {
/*
* top fragment in current tab doesn't handles back press, we can do
* our thing, which is
*
* if current tab has only one fragment in stack, ie first fragment
* is showing for this tab. finish the activity else pop to previous
* fragment in stack for the same tab
*/
if (mStacks.get(mCurrentTab).size() == 1) {
super.onBackPressed();
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);// or call finish..
} else {
popFragments();
}
} else {
// do nothing.. fragment already handled back button press.
}
}
/*
* Imagine if you wanted to get an image selected using ImagePicker intent
* to the fragment. Ofcourse I could have created a public function in that
* fragment, and called it from the activity. But couldn't resist myself.
*/
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (mStacks.get(mCurrentTab).size() == 0) {
return;
}
}
tabhost.xml
<?xml version="1.0" encoding="utf-8"?>
<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">
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="0"/>
<FrameLayout
android:id="@+android:id/realtabcontent"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
<TabWidget
android:id="@android:id/tabs"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="55dip"
android:layout_weight="0"/>
</LinearLayout>
</TabHost>
立即使类BaseFragment从片段延伸通过所有添加的类将下相同FragmentActivity待处理
BaseFragment.java
public class BaseFragment extends Fragment {
public static AppMainTabActivity mActivity;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mActivity = (AppMainTabActivity) this.getActivity();
}
public boolean onBackPressed() {
return false;
}
}
立即使T1_A。 java，T1_B.java ....都在TAB1之下，类似地T2_A.java，T2_B.java ....（对于TAB2），T3_A.java，T3_B.java ....（对于TAB3） T1_A。java的
public class T1_A extends BaseFragment{
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.test, container, false);
Button btn=(Button)view.findViewById(R.id.btn);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mActivity.pushFragments("TAB1",
new T1_B(), true, true);
}
});
return view;
}
}
该活动有TabHost？ –
TabHost在MainActivity中。我有4个不同的活动：HomeActivity，RankingActivity，RewardActivity和TeamActivity。我必须通过在HomeActivity中按一个按钮来显示RankingActivity – lucgian841