안드로이드 AdapterView(BaseAdapter) 예제 따라하기

- BaseAdapter를 이용해서 adapter 생성하고,사진 gridview로 뿌리고 imageview 아이템뷰를 만들어서 intent넘기는 프로그래밍을 해보자
- Adapter패턴 적용이 되어 좀더 효율 적인 프로그래밍인된다.

-Java 소스

public class Ex08_AdapterViewActivity extends Activity implements

OnClickListener, OnItemClickListener {

ArrayList<Integer> arrayItem;

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

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.gridview);

arrayItem = new ArrayList<Integer>();// 데이터 생성

arrayItem.add(R.drawable.icon);

arrayItem.add(R.drawable.icon);

arrayItem.add(R.drawable.icon);

arrayItem.add(R.drawable.icon);

arrayItem.add(R.drawable.icon);

arrayItem.add(R.drawable.icon);

arrayItem.add(R.drawable.icon);

arrayItem.add(R.drawable.icon);

arrayItem.add(R.drawable.icon);

ImageAdapter adapter = new ImageAdapter(this, arrayItem);// Adapter 생성

GridView grid = (GridView) this.findViewById(R.id.grid1);// 연결

grid.setAdapter(adapter);

// grid.setOnClickListener(this);

grid.setOnItemClickListener(this);

}

@Override

public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {

// TODO Auto-generated method stub

Intent intent = new Intent(this, MyPrint.class);

intent.putExtra("param1", arrayItem.get(arg2));

startActivity(intent);

}

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

}

}
------------------------------------------------------------------------------------------------------- 

public class ImageAdapter extends BaseAdapter {

private Context mContext;

private ArrayList<Integer> mArrayItem;

public ImageAdapter(Context c, ArrayList<Integer> arrayItem) {

mContext = c;

mArrayItem = arrayItem;

}

@Override

public int getCount() {

// TODO Auto-generated method stub

return mArrayItem.size(); // 갯수 return

}

@Override

public Object getItem(int arg0) {

// TODO Auto-generated method stub

return mArrayItem.get(arg0); // 해당되는 position의 내용

}

@Override

public long getItemId(int arg0) {

// TODO Auto-generated method stub

return arg0; // 해당되는 position의 id

}

@Override

public View getView(int arg0, View arg1/* item에 대한뷰 하나하나 */, ViewGroup arg2
/* * 뷰* 전체*/) {

// TODO Auto-generated method stub

ImageView imageview;

if (arg1 == null) {

imageview = new ImageView(mContext);

imageview.setScaleType(ImageView.ScaleType.CENTER_CROP);

imageview.setPadding(8, 8, 8, 8);

} else {

imageview = (ImageView) arg1;

}

imageview.setImageResource(mArrayItem.get(arg0));

return imageview;

}

}

--------------------------------------------------------------------------------------------------------

public class MyPrint extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

setContentView(R.layout.myprint);

Intent intent = getIntent();

int val = intent.getIntExtra("param1", 0);

TextView text = (TextView) this.findViewById(R.id.text1print);

String s = Integer.toString(val);

text.setText(s);

ImageView view = (ImageView) this.findViewById(R.id.image1print);

view.setImageResource(val);

}

}

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

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

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

    <GridView

        android:id="@+id/grid1"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent"

        android:columnWidth="70dp"

        android:gravity="center"

        android:numColumns="auto_fit" />

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

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

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

    <TextView

        android:id="@+id/text1print"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content" />

    <ImageView

        android:id="@+id/image1print"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content" />

</LinearLayout>

-실행 화면