[底层解决方案]
我需要一个标签来进行以下操作,但我不确定如何实现它:
我之所以模糊地问这个问题的原因是我尝试过一种方法,但是碰到了一堵砖墙,所以我想知道经验越多的人会怎么做。
根据要求提供了一些来源: CustomTabActivity.java
private TabHost mTabHost;
private Context ctx = this;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// construct the tabhost
setContentView(R.layout.main);
setupTabHost();
mTabHost.getTabWidget().setDividerDrawable(R.drawable.tab_divider);
setupTab(new TextView(this), "t1", R.drawable.myimg1);
setupTab(new TextView(this), "t2", R.drawable.myimg2);
mTabHost.setOnTabChangedListener(new OnTabChangeListener(){
@Override
public void onTabChanged(String tabId) {
Log.e("Simon", "Current tab - " + Integer.toString(mTabHost.getCurrentTab()));
View currentView = mTabHost.getChildAt(mTabHost.getCurrentTab());
currentView.getClass();
}
});
}
private void setupTabHost() {
mTabHost = (TabHost) findViewById(android.R.id.tabhost);
mTabHost.setup();
}
private void setupTab(final View view, final String tag, int num) {
View tabview = createTabView(mTabHost.getContext(), tag, num);
TabSpec setContent = mTabHost.newTabSpec(tag).setIndicator(tabview).setContent(new TabContentFactory() {
public View createTabContent(String tag) {return view;}
});
mTabHost.addTab(setContent);
}
private static View createTabView(final Context context, final String text, final int num) {
View view = LayoutInflater.from(context).inflate(R.layout.tabs_bg, null);
TextView tv = (TextView) view.findViewById(R.id.tabsText);
tv.setText(text);
ImageView iv = (ImageView) view.findViewById(R.id.tabsImg);
iv.setImageResource(num);
return view;
}
main.xml中
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<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="fill_parent" android:layout_height="fill_parent" android:layout_weight="1">
<ViewStub android:id="@+id/stub1"
android:inflatedId="@+id/subTree"
android:layout="@layout/mylayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</FrameLayout>
<TabWidget android:id="@android:id/tabs"
android:layout_width="fill_parent" android:background="@drawable/tabs_bg" android:layout_height="wrap_content"/>
</LinearLayout>
</TabHost>
</LinearLayout>
mylayout.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button android:text="Button" android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
<ProgressBar android:layout_width="wrap_content" android:layout_height="wrap_content" style="?android:attr/progressBarStyleLarge" android:id="@+id/progressBar1"></ProgressBar>
</LinearLayout>
--------------解-------------
所以问题解决了。我已将R.drawable.myimg1替换为res / drawable- [hdpi | ldpi | mdpi]文件夹中的静态图像,并将其替换为res / drawable中的新xml文件,如下所示:
mydrawable1.xml
<?xml version="1.0" encoding="utf-8"?>
<selector
xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_selected="true"
android:drawable="@drawable/myimg1_selected"/>
<item android:drawable="@drawable/myimg1"/>
</selector>
myimg1和myimg1_selected是我想要在不同状态下显示的图像。