android自定義控件自動換行效果實現

第一篇博客裡面有介紹一篇關於自動換行實現諸多自定義控件跟各種效果的博文，但是礙於當初技術能力有限，寫的jar包裡的代碼亂七八糟，在最近忙完了手頭的工作，不經意間翻看了之前的代碼，真是慘不忍睹，隨決定重新封裝。重新編寫的android-custom-vg前後修改了多次版本暫定為2.6.0，模擬的ListView加載數據的流程，為了更方便的使用。只做了最基礎的效果，ListView中定位某個View顯示的屬性，則沒有被實現。

自定義控件換行效果jar調用API：

setDividerWidth(int dividerWidth); //設置兩個Item的水平間距，第一個Item距離左邊框距離為0

setDividerHeight(int dividerHeight); //設置兩個Item的垂直間距，第一行Item距離頂部邊框距離為0

setOnItemClickListener(OnItemClickListener listener); //獲取Item的點擊事件

setOnItemLongClickListener(OnItemLongClickListener listener); //獲取Item的長按事件

 

效果圖：

1、activity_main.xml：為了實現滑動效果，把自定義控件放進ScrollView控件中

 

2、MainActivity.java

 

 

import com.custom.vg.list.CustomListView;
import com.custom.vg.list.OnItemClickListener;
import com.custom.vg.list.OnItemLongClickListener;

public class MainActivity extends Activity implements OnClickListener {
	
	private String TAG = MainActivity.class.getSimpleName();
	private CustomListView lv;
	private List list = null;
	private MainSexangleAdapter adapter;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		lv = (CustomListView) findViewById(R.id.sexangleView);
		findViewById(R.id.btn_add).setOnClickListener(this);
		findViewById(R.id.btn_remove).setOnClickListener(this);	
		
		new Thread(new MyFormatListThread()).start();		
	}
	
	private void ShowSexangleListView(){
		
		adapter = new MainSexangleAdapter(this, list);
		lv.setDividerHeight(10);
		lv.setDividerWidth(10);
		lv.setAdapter(adapter);
		lv.setOnItemClickListener(new OnItemClickListener() {
			
			@Override
			public void onItemClick(AdapterView arg0, View arg1, int arg2, long arg3) {
				Toast.makeText(MainActivity.this, 點擊了 : +arg2, 300).show();
			}
		});
		
		lv.setOnItemLongClickListener(new OnItemLongClickListener() {
			
			@Override
			public boolean onItemLongClick(AdapterView arg0, View arg1, int arg2,long arg3) {
				Toast.makeText(MainActivity.this, Long點擊了 : +arg2, 300).show();
				return true;
			}
		});
	}
	
	private Handler handler = new Handler(Looper.getMainLooper()){

		@Override
		public void handleMessage(Message msg) {
			try{
				if(msg.getData().containsKey(showSexangleListView)){
					ShowSexangleListView();
				}
			}catch(Exception e){}
		}
		
	};
	
	public class MyFormatListThread implements Runnable{

		@Override
		public void run() {
			Bundle b = new Bundle();
			try{
				list = new ArrayList();
				list.add(宇宙);
				list.add(宙即我心);
				list.add(心我心即宇);
				list.add(宇宙即我心我心即);
				list.add(心即宇宙細);
				list.add(即);
				list.add(宇宙細微);
				list.add(祥淵源);
				list.add(之發祥淵源實為);
				list.add(文明之);
				list.add(發祥);
				list.add(源實為諸人種);
				list.add(宇宙);
				list.add(宙即我心);
				list.add(心我心即宇);
				list.add(宇宙即我心我心即);
				list.add(心即宇宙細);
				list.add(即);
				list.add(宇宙細微);
				list.add(祥淵源);
				list.add(之發祥淵源實為);
				list.add(文明之);
				list.add(發祥);
				list.add(源實為諸人種);
				
				b.putBoolean(showSexangleListView, true);
			}catch(Exception e){
				Log.w(TAG, e);
			}finally{
				sendMsgHandler(handler,b);
			}
		}
	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.btn_add:
	
			list.add(Button添加+list.size());
			adapter.notifyDataSetChanged();			
			break;

		case R.id.btn_remove:

			list.remove(0);
			adapter.notifyDataSetChanged();
			break;
		}
		
	}
	
	private void sendMsgHandler(Handler handler,Bundle bundle){
		Message msg = handler.obtainMessage();
		msg.setData(bundle);
		handler.sendMessage(msg);
	}
	
	private class GetDataTask extends AsyncTask {

		@Override
		protected String[] doInBackground(Void... params) {
			// Simulates a background job.
			try {
				Thread.sleep(1000);
				if(list == null)
					list = new ArrayList();
				else
					list.clear();
				list.add(宇宙);
				list.add(宙即我心);
				list.add(心我心即宇);
				list.add(宇宙即我心我心即);
				list.add(心即宇宙細);
				list.add(即);
				list.add(宇宙細微);
				list.add(祥淵源);
				list.add(之發祥淵源實為);
				list.add(文明之);
				list.add(發祥);
				list.add(源實為諸人種);
				list.add(宇宙);
				list.add(宙即我心);
				list.add(心我心即宇);
				list.add(宇宙即我心我心即);
				list.add(心即宇宙細);
				list.add(即);
				list.add(宇宙細微);
				list.add(祥淵源);
				list.add(之發祥淵源實為);
				list.add(文明之);
				list.add(發祥);
				list.add(源實為諸人種);
			} catch (InterruptedException e) {
			}
			return null;
		}

		@Override
		protected void onPostExecute(String[] result) {
			// Do some stuff here

			// Call onRefreshComplete when the list has been refreshed.
			ShowSexangleListView();

			super.onPostExecute(result);
		}
	}

}

3、MainSexangleAdapter：繼承自CustomAdapter

 

 

import com.custom.vg.list.CustomAdapter;

public class MainSexangleAdapter extends CustomAdapter {
	
	private List list;
	private Context con;
	private LayoutInflater inflater;

	public MainSexangleAdapter(Context context, List list) {
		this.con = context;
		this.list = list;
		inflater = LayoutInflater.from(con);
	}

	@Override
	public int getCount() {
		return list.size();
	}

	@Override
	public Object getItem(int position) {
		return position;
	}

	@Override
	public long getItemId(int position) {
		return position;
	}

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

		ViewHolder vh = null;
		if(convertView == null){
			vh = new ViewHolder();
			
			convertView = inflater.inflate(R.layout.adapter_sexangle_item_style, null);
			
			vh.tv = (TextView) convertView.findViewById(R.id.adapter_text);
			
			convertView.setTag(vh);
		}else{
			vh = (ViewHolder) convertView.getTag();
		}
		
		String str = list.get(position);
		vh.tv.setText(str);
		
		return convertView;
	}
	
	public class ViewHolder{
		public TextView tv;
	}

}

基本調用方法跟ListView模式很近，Item可以自定義任意界面，不局限於上圖。如需對Item操作顯示不同效果也可在Adapter中進行處理，修改完List集合中的數據然後adapter刷新操作即可。