android开发之-FragmentTabHost的应用

布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<FrameLayout
android:id="@+id/realtabcontent"
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_weight="1" />

<android.support.v4.app.FragmentTabHost
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/bg_tabhost_bg">

<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="0" />
</android.support.v4.app.FragmentTabHost>

</LinearLayout>

.java文件

public class MainActivity extends FragmentActivity {

private FragmentTabHost mTabHost;

// 布局填充器

private LayoutInflater mLayoutInflater;
//Fragment数组界面
private Class mFragmentArray[] = { Fragment1.class, Fragment2.class,
Fragment3.class};
// 存放图片数组
private int mImageArray[] = { R.drawable.tab_bendi_btn,
R.drawable.tab_shujia_btn, R.drawable.tab_lishi_btn,

};
/**
* 选修卡文字
*
*/
private String mTextArray[] = { "本地", "书架", "历史",};

@SuppressLint("NewApi") @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

initView();

}

/**
* 初始化组件
*/
private void initView() {
mLayoutInflater = LayoutInflater.from(this);

// 找到TabHost
mTabHost = (FragmentTabHost) findViewById(android.R.id.tabhost);
mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent);
// 得到fragment的个数
int count = mFragmentArray.length;
for (int i = 0; i < count; i++) {
// 给每个Tab按钮设置图标、文字和内容
TabSpec tabSpec = mTabHost.newTabSpec(mTextArray[i])
.setIndicator(getTabItemView(i));
// 将Tab按钮添加进Tab选项卡中
mTabHost.addTab(tabSpec, mFragmentArray[i], null);
// 设置Tab按钮的背景
mTabHost.getTabWidget().getChildAt(i)
.setBackgroundResource(R.drawable.selector_tab_background);
}
}

/**
*
* 给每个Tab按钮设置图标和文字
*/
private View getTabItemView(int index) {
View view = mLayoutInflater.inflate(R.layout.tab_item_view, null);
ImageView imageView = (ImageView) view.findViewById(R.id.imageview);
imageView.setImageResource(mImageArray[index]);
TextView textView = (TextView) view.findViewById(R.id.textview);
textView.setText(mTextArray[index]);

return view;
}
}