第五篇 ImageSwitcher篇

直奔主题~！

结构如图：

第五篇 ImageSwitcher篇

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" android:gravity="center"><ImageSwitcher android:id="@+id/is"android:layout_width="fill_parent" android:layout_height="200dip"></ImageSwitcher><LinearLayout android:layout_width="fill_parent"android:id="@+id/linearLayout1" android:layout_height="wrap_content"android:gravity="center"><Button android:text="上一页" android:id="@+id/up_btn"android:layout_width="wrap_content" android:layout_height="wrap_content"></Button><Button android:text="下一页" android:id="@+id/next_btn"android:layout_width="wrap_content" android:layout_height="wrap_content"></Button></LinearLayout></LinearLayout>

Control_ImageSwitcherActivity.java代码:

public class Control_ImageSwitcherActivity extends Activity {ImageSwitcher is;Button next_btn;Button up_btn;int[] imggroup;int index=0;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        findAll();        bind();    }        public void findAll()    {    is=(ImageSwitcher) this.findViewById(R.id.is);    next_btn=(Button) this.findViewById(R.id.next_btn);    up_btn=(Button) this.findViewById(R.id.up_btn);    }        public void bind()    {    imggroup=new int[]{R.raw.jwc1,R.raw.jwc2,R.raw.jwc3,R.raw.jwc4,R.raw.jwc5};    next_btn.setOnClickListener(mylistener);    up_btn.setOnClickListener(mylistener);    is.setFactory(new ViewFactory() {       public View makeView() {// TODO Auto-generated method stub//return null;ImageView iv=new ImageView(Control_ImageSwitcherActivity.this);iv.setLayoutParams(new  ImageSwitcher.LayoutParams(100, 100));return iv;}});    is.setBackgroundResource(imggroup[index]);    }                private View.OnClickListener mylistener =new OnClickListener() {public void onClick(View v) {// TODO Auto-generated method stubswitch(v.getId()){case R.id.up_btn:if(index>=1){   index--;   is.setBackgroundResource(imggroup[index]);}else{  Toast.makeText(Control_ImageSwitcherActivity.this, "已经到了第一页", Toast.LENGTH_LONG).show();}break;case R.id.next_btn:if(index<(imggroup.length-1)){   index++;   is.setBackgroundResource(imggroup[index]);}else{  Toast.makeText(Control_ImageSwitcherActivity.this, "已经到了最后一页", Toast.LENGTH_LONG).show();}break;default:break;}}};}

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