GridView

1、首先准备 图片素材：a0-a11共12张图片

2、布局文件：

<?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"

    >

<GridView

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

android:id="@+id/gridview"

android:padding="30dip"

android:columnWidth="52dip"

android:background="@drawable/top"

<!-- GridView四列显示-->

android:numColumns="4">

</GridView>

<ImageView

android:id="@+id/imgview"

android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:layout_x="95px"

    android:layout_y="250px"

></ImageView>

</LinearLayout>

java文件：

public class TestGridView extends Activity implements

GridView.OnItemSelectedListener, GridView.OnItemClickListener {

private GridView gv;

private ImageView imgv;

private ImageAdapter imgVAdapter;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

gv = (GridView) findViewById(R.id.gridview);

imgv = (ImageView) findViewById(R.id.imgview);

imgVAdapter = new ImageAdapter();

gv.setAdapter(imgVAdapter);

gv.setOnItemClickListener(this);

gv.setOnItemSelectedListener(this);

}

// ----------------------------------------

public class ImageAdapter extends BaseAdapter {

// Context myContext;

private ImageView theImageView;

private Integer[] imgID = { R.drawable.a0, R.drawable.a1,

R.drawable.a2, R.drawable.a3, R.drawable.a4, R.drawable.a5,

R.drawable.a6, R.drawable.a7, R.drawable.a8, R.drawable.a9,

R.drawable.a10, R.drawable.a11 };

// public ImageAdapter(Context context) {

// this.myContext = context;

// }

@Override

public int getCount() {

// TODO Auto-generated method stub

return imgID.length;

}

@Override

public Object getItem(int position) {

// TODO Auto-generated method stub

// return position;

return position;

}

@Override

public long getItemId(int position) {

// TODO Auto-generated method stub

return position;

}

public Integer getClickedImg(int index) {

return imgID[index];

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

theImageView = new ImageView(TestGridView.this);

theImageView.setImageResource(imgID[position]);

theImageView.setAdjustViewBounds(true);

theImageView

.setBackgroundResource(android.R.drawable.picture_frame);

return theImageView;

}

}

// ----------------------------------------

@Override

public void onItemSelected(AdapterView<?> parent, View view, int position,

long id) {

// TODO Auto-generated method stub

imgv.setImageResource(imgVAdapter.getClickedImg(position));

}

@Override

public void onNothingSelected(AdapterView<?> parent) {

// TODO Auto-generated method stub

}

@Override

public void onItemClick(AdapterView<?> parent, View view, int position,

long id) {

// TODO Auto-generated method stub

new AlertDialog.Builder(this).setTitle("图标浏览").setIcon(

imgVAdapter.getClickedImg(position)).setPositiveButton("确定",

new OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

}

}).show();

}

}