android用户界面-组件Widget-选项卡Tab
使用Tab的步骤：
1、在布局文件中使用FrameLayout列出Tab组件及Tab中的内容组件。
2、Activity要继承TabActivity。
3、调用TabActivity的getTabHost()方法获得TabHost对象。
4、通过TabHost创建Tab选项。
/Chapter04_UI_Tab01/src/com/amaker/test/MainActivity.java
代码
package
com.amaker.test;
import
android.app.TabActivity;
import
android.os.Bundle;
import
android.view.LayoutInflater;
import
android.view.Window;
import
android.view.WindowManager;
import
android.widget.TabHost;
import
android.widget.Toast;
import
android.widget.TabHost.OnTabChangeListener;
public
class
MainActivity
extends
TabActivity {
@Override
public
void
onCreate(Bundle savedInstanceState) {
super
.onCreate(savedInstanceState);
/*
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
*/
TabHost th
=
getTabHost();
LayoutInflater.from(
this
).inflate(R.layout.main, th.getTabContentView(),
true
);
th.addTab(th.newTabSpec(
"
all
"
).setIndicator(
"
所有通话记录
"
).setContent(R.id.TextView01));
th.addTab(th.newTabSpec(
"
ok
"
).setIndicator(
"
已接来电
"
).setContent(R.id.TextView02));
th.addTab(th.newTabSpec(
"
cancel
"
).setIndicator(
"
未接来电
"
).setContent(R.id.TextView03));
th.setOnTabChangedListener(
new
OnTabChangeListener() {
@Override
public
void
onTabChanged(String tabId) {
Toast.makeText(MainActivity.
this
, tabId, Toast.LENGTH_LONG).show();
}
}
);
}
}
/Chapter04_UI_Tab01/res/layout/main.xml
代码
<?
xml version="1.0" encoding="utf-8"
?>
<
FrameLayout
xmlns:android
="http://schemas.android.com/apk/res/android"
android:id
="@+id/FrameLayout01"
android:layout_width
="wrap_content"
android:layout_height
="wrap_content"
>
<
TextView
android:id
="@+id/TextView01"
android:layout_width
="wrap_content"
android:layout_height
="wrap_content"
android:text
="所有通话记录"
></
TextView
>
<
TextView
android:id
="@+id/TextView02"
android:layout_width
="wrap_content"
android:layout_height
="wrap_content"
android:text
="已接来电"
></
TextView
>
<
TextView
android:id
="@+id/TextView03"
android:layout_width
="wrap_content"
android:layout_height
="wrap_content"
android:text
="未接来电"
></
TextView
>
</
FrameLayout
>
通过实现一个接口TabHost.TabContentFactory的createTabContent方法来制定Tab的内容
/Chapter04_UI_Tab02/src/com/amaker/test/MainActivity.java
代码
package
com.amaker.test;
import
java.util.ArrayList;
import
java.util.List;
import
android.app.TabActivity;
import
android.os.Bundle;
import
android.view.View;
import
android.widget.ArrayAdapter;
import
android.widget.ListView;
import
android.widget.TabHost;
public
class
MainActivity
extends
TabActivity
implements
TabHost.TabContentFactory {
/**
Called when the activity is first created.
*/
@Override
public
void
onCreate(Bundle savedInstanceState) {
super
.onCreate(savedInstanceState);
TabHost th
=
getTabHost();
th.addTab(th.newTabSpec(
"
all
"
).setIndicator(
"
所有通话记录
"
).setContent(
this
));
th.addTab(th.newTabSpec(
"
ok
"
).setIndicator(
"
已接来电
"
).setContent(
this
));
th
.addTab(th.newTabSpec(
"
cancel
"
).setIndicator(
"
未接来电
"
)
.setContent(
this
));
}
public
View createTabContent(String tag) {
ListView lv
=
new
ListView(
this
);
List
<
String
>
list
=
new
ArrayList
<
String
>
();
list.add(tag);
if
(tag.equals(
"
all
"
)){
list.add(
"
tom
"
);
list.add(
"
kite
"
);
list.add(
"
rose
"
);
}
else
if
(tag.equals(
"
ok
"
)){
list.add(
"
tom
"
);
list.add(
"
kite
"
);
}
else
{
list.add(
"
rose
"
);
}
ArrayAdapter adapter
=
new
ArrayAdapter(
this
,
android.R.layout.simple_list_item_checked, list);
lv.setAdapter(adapter);
return
lv;
}
}
/Chapter04_UI_Tab02/res/layout/main.xml
代码
<?
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"
/>
</
LinearLayout
>