java Android Tabhost 刷新
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Android Tabhost refresh
提问by thathashd
I have the following code to tabhost.
我有以下代码来tabhost。
tabHost.addTab(tabHost.newTabSpec("tab1")
.setIndicator("First Text")
.setContent(new Intent(this, class1.class)));
tabHost.addTab(tabHost.newTabSpec("tab2")
.setIndicator("Second Text")
.setContent(new Intent(this, class2.class)));
How can i refresh each tab? I want to do this because i have some problems showing data from database.
如何刷新每个选项卡？我想这样做是因为我在显示数据库中的数据时遇到了一些问题。
tanks
坦克
回答by Tanmay Mandal
I think this is what you want
我想这就是你想要的
tabHost.addTab(tabHost.newTabSpec("tab1")
.setIndicator("First Text")
.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
.setContent(new Intent(this, class1.class)));
tabHost.addTab(tabHost.newTabSpec("tab2")
.setIndicator("Second Text")
.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
.setContent(new Intent(this, class2.class)));
Just use .addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)to your tab class and get your desired result
只需使用.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)您的选项卡类并获得您想要的结果
回答by Kun Andrei
Just use onResumefunction. For me works just fine.
就用onResume函数吧。对我来说效果很好。
回答by Kartik Domadiya
Use http://developer.android.com/reference/android/widget/TabHost.OnTabChangeListener.html
使用http://developer.android.com/reference/android/widget/TabHost.OnTabChangeListener.html
For Example :
例如 ：
mTabHost.setOnTabChangedListener(new OnTabChangeListener(){
@Override
public void onTabChanged(String tabId) {
if(TAB_1.equals(tabId)) {
//Do first activity task
}
if(TAB_2.equals(tabId)) {
//Do the other task...so on
}
}});
Edited :
编辑：
If you want to see that a particular tab is clicked, you need to add your listener to the tab itself, not the TabHost.
如果您想看到某个特定的选项卡被点击，您需要将您的侦听器添加到选项卡本身，而不是 TabHost。
The hierarchy of views in a tab implementation is:
选项卡实现中的视图层次结构是：
TabHost
TabWidget
(tab)
(tab)
FrameLayout
The tabs are added at runtime by calling: tabHost.addTab(tabHost.newTabSpec(""));
通过调用在运行时添加选项卡： tabHost.addTab(tabHost.newTabSpec(""));
You can then get a handle to the individual tabs by calling: getTabWidget().getChildAt(4);
然后您可以通过调用获取单个选项卡的句柄：getTabWidget().getChildAt(4);
In essence, you are adding your OnClickListener to a child of the TabWidget. You can now pick up the clicks on your individual tab. However, this will override the default behavior which changes the content when a tab is clicked. So, to get your content to change, your OnClickListener will need to do that for you.
本质上，您将 OnClickListener 添加到 TabWidget 的子项。您现在可以在您的个人标签上获取点击次数。但是，这将覆盖单击选项卡时更改内容的默认行为。因此，要更改您的内容，您的 OnClickListener 将需要为您执行此操作。
Here is a full example, which lets you intercept the click event, and change the content below the tab:
这是一个完整的示例，它可以让您拦截单击事件，并更改选项卡下方的内容：
final String myTabTag = "My Tab";
final int myTabIndex = 3;
getTabHost().addTab( getTabHost().newTabSpec(myTabTag) );
getTabWidget().getChildAt(myTabIndex).setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (getTabHost().getCurrentTabTag().equals(myTabTag)) {
getTabHost().setCurrentTab(myTabIndex );
}
}
});
回答by Harinder
public static void chngtab(String name) {
((TextView)tabHost.getTabWidget().getChildAt(0)
.findViewById(android.R.id.title)).setText(name);
}
