Android编程之九宫格实现方法实例分析

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="fill_parent"  android:layout_height="fill_parent"  > <!-- id gv_all  宽高都是填充父窗体  numcolums 为3  水平控件的距离 10px  垂直距离是10px  gridview 离底部58px  离顶部28px  离左边5px  离右边5px --><GridView  android:id="@+id/gv_all"  android:layout_height="fill_parent"  android:layout_width="fill_parent"  android:numColumns="3"  android:horizontalSpacing="10px"  android:verticalSpacing="10px"  android:layout_marginBottom="58px"  android:layout_marginTop="28px"  android:layout_marginLeft="5px"  android:layout_marginRight="5px"></GridView></RelativeLayout>

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="90px" android:layout_height="90px">  <ImageView   android:layout_width="64px"   android:layout_height="64px"   android:layout_gravity="center_horizontal"   android:id="@+id/main_gv_iv"  />  <TextView  android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:layout_gravity="center_horizontal"   android:textSize="16px"   android:textColor="#FFF"   android:id="@+id/main_gv_tv"  /></LinearLayout>

public class MainActivity extends Activity {  public static final String TAG = "MainActivity";  GridView maingv;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    //全屏    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);    setContentView(R.layout.mainactivity);    //获取到GridView    maingv = (GridView) this.findViewById(R.id.gv_all);    //给gridview设置数据适配器    maingv.setAdapter(new MainGridViewAdapter(this));    //点击事件    maingv.setOnItemClickListener(new MainItemClickListener());  }  private class MainItemClickListener implements OnItemClickListener{    /**     * @param parent 代表当前的gridview     * @param view 代表点击的item     * @param position 当前点击的item在适配中的位置     * @param id 当前点击的item在哪一行     */    public void onItemClick(AdapterView<?> parent, View view, int position,        long id) {      switch (position) {      case 0:        Intent intent = new Intent(MainActivity.this,LostProtectedActivity.class);        startActivity(intent);        break;      }    }  }}

// 完成gridview 数据到界面的适配public class MainGridViewAdapter extends BaseAdapter {  private static final String TAG = "MainGridViewAdapter";  private String[] names = {"手机防盗","通讯卫士","软件管理","任务管理","上网管理","手机杀毒","系统优化","高级工具","设置中心"};  private int[] icons = {R.drawable.safe,R.drawable.callmsgsafe,R.drawable.app,R.drawable.taskmanager,R.drawable.netmanager,R.drawable.trojan,R.drawable.sysoptimize,R.drawable.atools,R.drawable.settings};  private Context context;  LayoutInflater infalter;  public MainGridViewAdapter(Context context) {    this.context = context;    //方法1 通过系统的service 获取到 试图填充器    //infalter = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);    //方法2 通过layoutinflater的静态方法获取到 视图填充器    infalter = LayoutInflater.from(context);  }  // 返回gridview里面有多少个条目  public int getCount() {    return names.length;  }  //返回某个position对应的条目  public Object getItem(int position) {    return position;  }  //返回某个position对应的id  public long getItemId(int position) {    return position;  }  //返回某个位置对应的视图  public View getView(int position, View convertView, ViewGroup parent) {    Log.i(TAG,"GETVIEW "+ position);    //把一个布局文件转换成视图    View view = infalter.inflate(R.layout.mainactivity_item, null);    ImageView iv = (ImageView) view.findViewById(R.id.main_gv_iv);    TextView tv = (TextView) view.findViewById(R.id.main_gv_tv);    //设置每一个item的名字和图标    iv.setImageResource(icons[position]);    tv.setText(names[position]);    return view;  }}