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Android 九宮格

控件實現 itemid osi getitemid new extend item vertica listview

  如下代碼直接復制到項目就可以運行使用了。我們都知道,android的九宮格可以用GridView控件實現,這裏首先定義一個

  gridview.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
> <GridView android:id="@+id/gv_home" android:layout_width="match_parent" android:layout_height="match_parent" android:numColumns="3" > </GridView> </LinearLayout>

  接著還得在定義一個gridview_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:orientation="vertical" > <ImageView android:layout_width="wrap_content" android:layout_height
="wrap_content" android:id="@+id/iv_icon" android:src="@drawable/ic_launcher" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/tv_title" android:text="模塊標題" android:textSize="18sp" /> </LinearLayout>

  那麽現在布局就實現了,接下來就是Android代碼了。這裏需要註意的就是不能缺少GridView適配器。

  

public class MainActivity extends Activity {
    private GridView gv_home;
    private String[] mTitleStrs;
    private int[] mDrawableIds;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home);
        initUI();
        //初始化數據的方法
        initData();
    }

    private void initData() {
    
        mTitleStrs = new String[]{"1","2","3","4",
                "5","6","7","8","9"};//註意這裏的數字要和下面的圖片id一一對應,要不然實現的效果會文字圖片不符合
        mDrawableIds = new int[]{R.drawable.ic_launcher,R.drawable.ic_launcher,
                                    R.drawable.ic_launcher,R.drawable.ic_launcher,
                                    R.drawable.ic_launcher,R.drawable.ic_launcher,
                                    R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher};
        //九宮格控件設置數據適配器(等同ListView數據適配器)
        gv_home.setAdapter(new MyAdapter());
    }
    
    class MyAdapter extends BaseAdapter{

        @Override
        public int getCount() {
            return mTitleStrs.length;
        }

        @Override
        public Object getItem(int position) {
            return mTitleStrs[position];
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View view = View.inflate(getApplicationContext(), R.layout.gridview_item, null);
            ImageView iv_icon = (ImageView) view.findViewById(R.id.iv_icon);
            TextView tv_title = (TextView) view.findViewById(R.id.tv_title);
            
            tv_title.setText(mTitleStrs[position]);
            iv_icon.setBackgroundResource(mDrawableIds[position]);
            
            return view;
        }
    }
    private void initUI() {
        gv_home = (GridView) findViewById(R.id.gv_home);
    }
}

Android 九宮格