Android(安卓)TabSwitcher自定义控件

先来看下效果:

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" android:background="#ffffff"><linearlayout xmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/tab" android:orientation="vertical"android:layout_width="fill_parent" android:layout_height="wrap_content"android:background="#ffffff"></linearlayout></linearlayout>

tabswitcher.java

package com.iaiai.activity;import android.content.context;import android.graphics.color;import android.view.gravity;import android.view.view;import android.widget.linearlayout;import android.widget.textview;/** *  * <p> * title: tabswitcher.java * </p> * <p> * e-mail: 176291935@qq.com * </p> * <p> * qq: 176291935 * </p> * <p> * http: iaiai.iteye.com * </p> * <p> * create time: 2011-8-11 * </p> *  * @author 丸子 * @version 0.0.1 */public class tabswitcher extends linearlayout {private context context;private string[] texts;private int selectedposition = 0;private int oldposition = selectedposition;private int[] background = { r.drawable.tabswitcher_short,color.transparent };private textview[] tvs;public tabswitcher(context context, string[] texts) {super(context);this.texts = texts;this.context = context;setorientation(horizontal);linearlayout.layoutparams params = new linearlayout.layoutparams(linearlayout.layoutparams.fill_parent,linearlayout.layoutparams.wrap_content);setlayoutparams(params);setbackgroundresource(r.drawable.tabswitcher_long);}@overrideprotected void onfinishinflate() {// todo auto-generated method stubsuper.onfinishinflate();tvs = new textview[texts.length];linearlayout.layoutparams params = new linearlayout.layoutparams(linearlayout.layoutparams.fill_parent,linearlayout.layoutparams.wrap_content);params.weight = 1;params.gravity = gravity.center_vertical;for (int i = 0; i < texts.length; i++) {textview child = new textview(context);child.settag(i);child.settextsize(16);child.settextcolor(color.black);child.setgravity(gravity.center);tvs[i] = child;child.setonclicklistener(listener);this.addview(child, params);}}onclicklistener listener = new onclicklistener() {@overridepublic void onclick(view v) {selectedposition = (integer) v.gettag();if (selectedposition != oldposition) {tvs[oldposition].setbackgroundcolor(background[1]);oldposition = selectedposition;((textview) v).setbackgroundresource(background[0]);if (onitemclicklisener != null) {onitemclicklisener.onitemclicklisener(v, selectedposition);}}}};@overrideprotected void onsizechanged(int w, int h, int oldw, int oldh) {super.onsizechanged(w, h, oldw, oldh);oldposition = selectedposition;for (int i = 0; i < texts.length; i++) {tvs[i].settext(texts[i]);if (selectedposition == i) {tvs[i].setbackgroundresource(background[0]);} else {tvs[i].setbackgroundcolor(background[1]);}}}private onitemclicklisener onitemclicklisener;public void setonitemclicklisener(onitemclicklisener onitemclicklisener) {this.onitemclicklisener = onitemclicklisener;}public interface onitemclicklisener {void onitemclicklisener(view view, int position);}public void settexts(string[] texts) {this.texts = texts;}public void setselectedposition(int selectedposition) {this.selectedposition = selectedposition;}}

iaiaiactivity.java

package com.iaiai.activity;import android.app.activity;import android.os.bundle;import android.view.view;import android.widget.linearlayout;import android.widget.toast;import com.iaiai.activity.tabswitcher.onitemclicklisener;/** *  * <p> * title: iaiaiactivity.java * </p> * <p> * e-mail: 176291935@qq.com * </p> * <p> * qq: 176291935 * </p> * <p> * http: iaiai.iteye.com * </p> * <p> * create time: 2011-8-11 * </p> *  * @author 丸子 * @version 0.0.1 */public class iaiaiactivity extends activity {@overridepublic void oncreate(bundle savedinstancestate) {super.oncreate(savedinstancestate);setcontentview(r.layout.main);tabswitcher tabswitcher = new tabswitcher(this, new string[] { "1","2", "3", "4" });tabswitcher.setselectedposition(1);tabswitcher.setonitemclicklisener(onitemclicklisener);tabswitcher.onfinishinflate();linearlayout linearlayout = (linearlayout) findviewbyid(r.id.tab);linearlayout.addview(tabswitcher, new linearlayout.layoutparams(linearlayout.layoutparams.fill_parent,linearlayout.layoutparams.wrap_content));}onitemclicklisener onitemclicklisener = new onitemclicklisener() {@overridepublic void onitemclicklisener(view view, int position) {// todo auto-generated method stub//switch (position) {case 0:case 1:case 2:toast.maketext(iaiaiactivity.this,"position clicked:" + position, toast.length_short).show();break;default:break;}}};}

tabswitcher_long.9.png:

tabswitcher_short.9.png:

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