GridView

た入场券 2024-02-18 18:56 31阅读 0赞

![Center][]

**layout.xml**

**MainActivity.java**

public class MainActivity extends Activity {
    
    	
    	@Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            
            GridView gridview = (GridView) findViewById(R.id.gridview);
            gridview.setAdapter(new ImageAdapter(this));
            
            gridview.setOnItemClickListener(new OnItemClickListener() {
    
    			@Override
    			public void onItemClick(AdapterView<?> parent, View view,
    					int position, long id) {
    				Toast.makeText(MainActivity.this, ""+position, Toast.LENGTH_LONG).show();
    			}
            	
    		});
    	}
    	
    	class ImageAdapter extends BaseAdapter {
    		
    		private Integer[] mThumbIds = {R.drawable.sample1, R.drawable.sample2, R.drawable.sample3,
    				R.drawable.sample4, R.drawable.sample5, R.drawable.sample6, R.drawable.sample7,
    				R.drawable.sample8, R.drawable.sample9, R.drawable.sample10, R.drawable.sample11,
    				R.drawable.sample12};
    		private Context context;
    		
    		public ImageAdapter(Context context) {
    			super();
    			this.context = context;
    		}
    
    		@Override
    		public int getCount() {
    			// TODO Auto-generated method stub
    			return mThumbIds.length;
    		}
    
    		@Override
    		public Object getItem(int position) {
    			// TODO Auto-generated method stub
    			return null;
    		}
    
    		@Override
    		public long getItemId(int position) {
    			// TODO Auto-generated method stub
    			return 0;
    		}
    
    		@Override
    		public View getView(int position, View convertView, ViewGroup parent) {
    			ImageView imageView;
    			
    			if(convertView == null) {
    				imageView = new ImageView(context);
    				imageView.setLayoutParams(new GridView.LayoutParams(85, 120));
    				imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
    				imageView.setPadding(0, 0, 0, 0);
    			} else {
    				imageView = (ImageView)convertView;
    			}
    			imageView.setImageResource(mThumbIds[position]);
    			return imageView;
    		}
    		
    	}
    }

[Center]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/475f2f3dcb1242f59d70dd97373870e8.png