gridview--基本的gridview

GridView 元素距离设定

因为该设定比较简单 防止以后忘记 所以贴 供自己查阅

1. 布局：main.xml

Java代码


<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>

<GridView

android:id="@+id/grid"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_centerInParent="true"

android:horizontalSpacing="50dp"

android:verticalSpacing="50dp"

/>

</RelativeLayout>

2. *.jave: GriUsage.java

Java代码


public class GridUsage extends Activity {

GridView grid;

ImageAdapter iAdapter;

String[] text = {

"one","two","three","four","five","six","seven","eight","nine","ten"

};

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

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

grid = (GridView)findViewById(R.id.grid);

iAdapter = new ImageAdapter(this);

grid.setAdapter(iAdapter);

grid.setNumColumns(3);

}

public class ImageAdapter extends BaseAdapter {

Activity activity;

public ImageAdapter(Activity a){

activity = a;

}

@Override

public int getCount() {

// TODO Auto-generated method stub

return text.length;

}

@Override

public Object getItem(int arg0) {

// TODO Auto-generated method stub

return null;

}

@Override

public long getItemId(int arg0) {

// TODO Auto-generated method stub

return arg0;

}

@Override

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

// TODO Auto-generated method stub

TextView tv;

if(convertView == null){

tv = new TextView(activity);

}

else {

tv = (TextView)convertView;

}

tv.setSingleLine(true);

tv.setBackgroundResource(R.drawable.back);

tv.setGravity(Gravity.CENTER);

tv.setText(text[position]);

return tv;

}

}

}

3. emulator 运行截图：



that's all. any idea or other are welcome!!!!