TabHost(顶部)升级,利用RadioGroup,效果和我前面的一篇有关ActivityGroup一样。


http://download.csdn.net/detail/sun6223508/3454092




TabHost(顶部)升级,利用RadioGroup,效果和我前面的一篇有关ActivityGroup一样。_第1张图片

作为android 程序员来说,TabHost是最常用的控件。前面介绍过ActivityGroup,它做出来的效果和tabhost是一样的。只不过ActivityGroup是一个activity容器。

今天给大家介绍RadioGroup,用RadioGroup实现tabhost的效果。


MainActivity.java

public class MainActivity extends TabActivity implements
		OnCheckedChangeListener {
	/** Called when the activity is first created. */
	private TabHost mHost;
	private Intent first;
	private Intent second;
	private Intent third;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.mainview);
		this.first = new Intent(this, test1.class);
		this.second = new Intent(this, test1.class);
		this.third = new Intent(this, test2.class);

		initRadios();

		setupIntent();

	}

	private void setupIntent() {
		this.mHost = getTabHost();
		TabHost localTabHost = this.mHost;
		localTabHost.addTab(buildTabSpec("mblog_tab", R.string.hello,
				R.drawable.icon_1_n, this.first));

		localTabHost.addTab(buildTabSpec("message_tab", R.string.hello,
				R.drawable.icon_2_n, this.second));

		localTabHost.addTab(buildTabSpec("userinfo_tab", R.string.hello,
				R.drawable.icon_3_n, this.third));

	}

	private TabHost.TabSpec buildTabSpec(String tag, int resLabel, int resIcon,
			Intent content) {

		return this.mHost.newTabSpec(tag).setIndicator(getString(resLabel),
				getResources().getDrawable(resIcon)).setContent(content);
	}

	private void initRadios() {

		((RadioButton) findViewById(R.id.titleat))
				.setOnCheckedChangeListener(this);
		((RadioButton) findViewById(R.id.titlecomment))
				.setOnCheckedChangeListener(this);
		((RadioButton) findViewById(R.id.titlemessage))
				.setOnCheckedChangeListener(this);
	}

	@Override
	public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
		// TODO Auto-generated method stub

		if (isChecked) {
			switch (buttonView.getId()) {
			case R.id.titleat:
				Log.v("buildTabSpec", "");
				this.mHost.setCurrentTabByTag("mblog_tab");
				break;
			case R.id.titlecomment:
				Log.v("buildTabSpec", "");
				this.mHost.setCurrentTabByTag("message_tab");
				break;
			case R.id.titlemessage:
				Log.v("buildTabSpec", "");
				this.mHost.setCurrentTabByTag("userinfo_tab");
				break;

			}
		}

	}

}

main.xml

<TabHost android:id="@android:id/tabhost" android:layout_width="fill_parent"
	android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android">
	<LinearLayout android:orientation="vertical"
		android:layout_width="fill_parent" android:layout_height="fill_parent">

		<RelativeLayout android:gravity="center_horizontal"
			android:layout_gravity="top" 
			android:layout_width="fill_parent" android:layout_height="wrap_content"
			android:background="@drawable/titlebar_lightgray_bg">
			<RadioGroup android:layout_gravity="top"
				android:layout_centerVertical="true" android:gravity="center_horizontal"
				android:layout_centerHorizontal="true" android:orientation="horizontal"
				android:layout_width="wrap_content" android:layout_height="wrap_content">

				<RadioButton android:id="@+id/titleat"
					android:layout_marginTop="2.0dip" android:text="sun"
					android:background="@drawable/title_button_group_left" style="@style/main_tab_bottom" />
				<RadioButton android:id="@+id/titlecomment"
					android:layout_marginTop="2.0dip" android:text="6223508"
					android:background="@drawable/title_button_group_middle" style="@style/main_tab_bottom" />
				<RadioButton android:id="@+id/titlemessage"
					android:layout_marginTop="2.0dip" android:text="gmail"
					android:background="@drawable/title_button_group_right" style="@style/main_tab_bottom" />
			</RadioGroup>
		</RelativeLayout>

		<FrameLayout android:id="@android:id/tabcontent"
			android:layout_width="fill_parent" android:layout_height="wrap_content"
			android:layout_weight="0.0" />

		<TabWidget android:id="@android:id/tabs" android:visibility="gone"
			android:layout_width="fill_parent" android:layout_height="wrap_content"
			android:layout_weight="1.0" />

	</LinearLayout>


</TabHost>

test1.java 和test2.java的内容是一样的。test2.java这里就不给大家贴了

public class test1 extends Activity {
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.main);
}
}

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    android:background="@drawable/sfsd"
    />
</LinearLayout>


styles.xml
    <style name="main_tab_bottom">
        <item name="android:textSize">@dimen/bottom_tab_font_size</item>
        <item name="android:textColor">#ffffffff</item>
        <item name="android:ellipsize">marquee</item>
        <item name="android:gravity">center_horizontal</item>
        <item name="android:background">@drawable/home_btn_bg</item>
        <item name="android:paddingTop">@dimen/bottom_tab_padding_up</item>
        <item name="android:layout_width">fill_parent</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:button">@null</item>
        <item name="android:singleLine">true</item>
        <item name="android:drawablePadding">@dimen/bottom_tab_padding_drawable</item>
        <item name="android:layout_weight">1.0</item>
    </style>


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