Android中使用GridView进行应用程序UI布局的教程

最后是MainActivity的布局以及Java代码
activity_main.xml：

<RelativeLayout xmlns:android="http://www.easck.com/apk/res/android"
  xmlns:tools="http://www.easck.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:padding="5dp"
  tools:context=".MainActivity">

  <!--numColumns设置每行显示多少个-->
  <GridView
    android:id="@+id/grid_photo"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:numColumns="3" />

</RelativeLayout>

MainActivity.java：

public class MainActivity extends AppCompatActivity {

  private Context mContext;
  private GridView grid_photo;
  private BaseAdapter mAdapter = null;
  private ArrayList<Icon> mData = null;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mContext = MainActivity.this;
    grid_photo = (GridView) findViewById(R.id.grid_photo);

    mData = new ArrayList<Icon>();
    mData.add(new Icon(R.mipmap.iv_icon_1, "图标1"));
    mData.add(new Icon(R.mipmap.iv_icon_2, "图标2"));
    mData.add(new Icon(R.mipmap.iv_icon_3, "图标3"));
    mData.add(new Icon(R.mipmap.iv_icon_4, "图标4"));
    mData.add(new Icon(R.mipmap.iv_icon_5, "图标5"));
    mData.add(new Icon(R.mipmap.iv_icon_6, "图标6"));
    mData.add(new Icon(R.mipmap.iv_icon_7, "图标7"));

    mAdapter = new MyAdapter<Icon>(mData, R.layout.item_grid_icon) {
      @Override
      public void bindView(ViewHolder holder, Icon obj) {
        holder.setImageResource(R.id.img_icon, obj.getiId());
        holder.setText(R.id.txt_icon, obj.getiName());
      }
    };

    grid_photo.setAdapter(mAdapter);

    grid_photo.setOnItemClickListener(new AdapterView.OnItemClickListener() {
      @Override
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        Toast.makeText(mContext, "你点击了~" + position + "~项", Toast.LENGTH_SHORT).show();
      }
    });

  }

}

 

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