Andorid tabhost usage Summary

The tabhost control in Android is a very useful control. tabhost can be used for pages displayed by modules.

Tabhost is a set of tabs composed of tabspac. Tabspec mainly has two important methods:

    /**     * A tab has a tab indicator, content, and a tag that is used to keep     * track of it.  This builder helps choose among these options.     *     * For the tab indicator, your choices are:     * 1) set a label     * 2) set a label and an icon     *     * For the tab content, your choices are:     * 1) the id of a {@link View}     * 2) a {@link TabContentFactory} that creates the {@link View} content.     * 3) an {@link Intent} that launches an {@link android.app.Activity}.     */    public class TabSpec {        private String mTag;        private IndicatorStrategy mIndicatorStrategy;        private ContentStrategy mContentStrategy;        private TabSpec(String tag) {            mTag = tag;        }        /**         * Specify a label as the tab indicator.         */        public TabSpec setIndicator(CharSequence label) {            mIndicatorStrategy = new LabelIndicatorStrategy(label);            return this;        }        /**         * Specify a label and icon as the tab indicator.         */        public TabSpec setIndicator(CharSequence label, Drawable icon) {            mIndicatorStrategy = new LabelAndIconIndicatorStrategy(label, icon);            return this;        }        /**         * Specify a view as the tab indicator.         */        public TabSpec setIndicator(View view) {            mIndicatorStrategy = new ViewIndicatorStrategy(view);            return this;        }        /**         * Specify the id of the view that should be used as the content         * of the tab.         */        public TabSpec setContent(int viewId) {            mContentStrategy = new ViewIdContentStrategy(viewId);            return this;        }        /**         * Specify a {@link android.widget.TabHost.TabContentFactory} to use to         * create the content of the tab.         */        public TabSpec setContent(TabContentFactory contentFactory) {            mContentStrategy = new FactoryContentStrategy(mTag, contentFactory);            return this;        }        /**         * Specify an intent to use to launch an activity as the tab content.         */        public TabSpec setContent(Intent intent) {            mContentStrategy = new IntentContentStrategy(mTag, intent);            return this;        }

Setindicator () allows you to set tab icons and text.

Note: 1. If your tabhost is obtained from the findviewbyid () in the XML file,

Tabwidget must be Android: Id = "@ Android: ID/tabs ",

Framelayout Android: Id = "@ Android: ID/tabcontent ";

<TabHost android:id="@+id/tabhost_info" android:layout_width="fill_parent"android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android"><LinearLayout android:id="@+id/linearLayout"android:layout_width="fill_parent" android:layout_height="fill_parent"android:orientation="vertical"><TabWidget android:id="@android:id/tabs"android:layout_width="fill_parent" android:layout_height="wrap_content"></TabWidget><FrameLayout android:id="@android:id/tabcontent"android:layout_width="fill_parent" android:layout_height="wrap_content"android:layout_gravity="fill"><include android:id="@+id/info_include01" layout="@layout/info_layout01" /><include android:id="@+id/info_include02" layout="@layout/info_layout02" /><include android:id="@+id/info_include03" layout="@layout/info_layout03" /></FrameLayout></LinearLayout></TabHost>

2. In the code, call the setup () method before adding a tabwidget.

Tabhost = (tabhost) findviewbyid (R. id. tabhost_info); tabhost. setup (); tabhost. addtab (tabhost. newtabspec ("info "). setcontent (r.id.info _ include01 ). setindicator ("basic information", getresources (). getdrawable (R. drawable. ic_launcher); tabhost. addtab (tabhost. newtabspec ("More information "). setcontent (r.id.info _ include02 ). setindicator ("More information", getresources (). getdrawable (R. drawable. ic_launcher); tabhost. addtab (tabhost. newtabspec ("attachment download "). setcontent (r.id.info _ include03 ). setindicator ("attachment download", getresources (). getdrawable (R. drawable. ic_launcher )));

The following is a self-written Demo:

Demo: http://download.csdn.net/detail/china1988s/4072957

 

References: http://mmqzlj.blog.51cto.com/2092359/642465