Перетаскивание изображений в gridview в android

Question

Я создаю пример приложения для Android, чтобы узнать о перетаскивании & падение в android. При запуске приложения я вижу несколько изображений в виде сетки. Теперь мне нужно перетащить одно изображение за раз на место другого. После удаления изображения поверх другого изображения должны поменяться местами. Как я могу это достичь? Пожалуйста, помогите мне.

Answer 1

Вы можете легко достигнуть этого с помощью thquinn это DraggableGridView

Вы можете добавить свой собственный макет

public class DraggableGridViewSampleActivity extends Activity { 
    static Random random = new Random(); 
    static String[] words = "the of and a to in is be that was he for it with as his I on have at by not they this had are but from or she an which you one we all were her would there their will when who him been has more if no out do so can what up said about other into than its time only could new them man some these then two first may any like now my such make over our even most me state after also made many did must before back see through way where get much go well your know should down work year because come people just say each those take day good how long Mr own too little use US very great still men here life both between old under last never place same another think house while high right might came off find states since used give against three himself look few general hand school part small American home during number again Mrs around thought went without however govern don't does got public United point end become head once course fact upon need system set every war put form water took".split(" "); 
    DraggableGridView dgv; 
    Button button1, button2; 
    ArrayList<String> poem = new ArrayList<String>(); 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     dgv = ((DraggableGridView)findViewById(R.id.vgv)); 
     button1 = ((Button)findViewById(R.id.button1)); 
     button2 = ((Button)findViewById(R.id.button2)); 

     setListeners(); 
    } 
    private void setListeners() 
    { 
     dgv.setOnRearrangeListener(new OnRearrangeListener() { 
      public void onRearrange(int oldIndex, int newIndex) { 
       String word = poem.remove(oldIndex); 
       if (oldIndex < newIndex) 
        poem.add(newIndex, word); 
       else 
        poem.add(newIndex, word); 
      } 
     }); 
     dgv.setOnItemClickListener(new OnItemClickListener() { 
      @Override 
      public void onItemClick(AdapterView<?> arg0, View view, int position, long arg3) { 
       Toast.makeText(getApplicationContext(), "On clicked" +position, Toast.LENGTH_SHORT).show(); 
       dgv.removeViewAt(position); 
       poem.remove(position); 
      } 
     }); 
     button1.setOnClickListener(new OnClickListener() { 
      public void onClick(View arg0) { 
       String word = words[random.nextInt(words.length)]; 
       addView(); 
       poem.add(word); 
      } 
     }); 
     button2.setOnClickListener(new OnClickListener() { 
      public void onClick(View arg0) { 
       String finishedPoem = ""; 
       for (String s : poem) 
        finishedPoem += s + " "; 
       new AlertDialog.Builder(DraggableGridViewSampleActivity.this) 
       .setTitle("Here's your poem!") 
       .setMessage(finishedPoem).show(); 
      } 
     }); 
    } 

    public void addView() 
    { 

     LayoutParams mLayoutParams= new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); 

     LinearLayout mLinearLayout= new LinearLayout(DraggableGridViewSampleActivity.this); 
     mLinearLayout.setOrientation(LinearLayout.VERTICAL); 
     mLinearLayout.setGravity(Gravity.CENTER_HORIZONTAL); 

     ImageView mImageView = new ImageView(DraggableGridViewSampleActivity.this); 

     if(dgv.getChildCount()%2==0) 
      mImageView.setImageResource(R.drawable.child1); 
     else 
      mImageView.setImageResource(R.drawable.child2); 

     mImageView.setScaleType(ImageView.ScaleType.FIT_XY); 
     mImageView.setLayoutParams(mLayoutParams); 

     mImageView.setId(dgv.getChildCount()); 

     mImageView.setOnTouchListener(new OnTouchListener() { 

      @Override 
      public boolean onTouch(View v, MotionEvent event) { 
       // TODO Auto-generated method stub 
       Toast.makeText(getApplicationContext(), v.getId()+"clicked ", Toast.LENGTH_SHORT).show(); 
       return dgv.onTouch(v, event); 
      } 
     }); 


      TextView mTextView = new TextView(DraggableGridViewSampleActivity.this); 

      mTextView.setLayoutParams(mLayoutParams); 

      mTextView.setOnTouchListener(new OnTouchListener() { 

       @Override 
       public boolean onTouch(View v, MotionEvent event) { 
        // TODO Auto-generated method stub 
        Toast.makeText(getApplicationContext(), v.getId()+"clicked text ", Toast.LENGTH_SHORT).show(); 
        return dgv.onTouch(v, event); 
       } 
      }); 

      TextView mTextViewLabel = new TextView(DraggableGridViewSampleActivity.this); 

      mTextViewLabel.setText(((dgv.getChildCount()+1)+"")); 
      mTextViewLabel.setLayoutParams(mLayoutParams); 

      mTextViewLabel.setId(dgv.getChildCount()); 

      mTextViewLabel.setOnTouchListener(new OnTouchListener() { 

       @Override 
       public boolean onTouch(View v, MotionEvent event) { 
        Toast.makeText(getApplicationContext(), v.getId()+"clicked text ", Toast.LENGTH_SHORT).show(); 
        return dgv.onTouch(v, event); 
       } 
      }); 

      mLinearLayout.setTag(mTextViewLabel); 
      mLinearLayout.addView(mTextViewLabel); 
      mLinearLayout.addView(mImageView); 
      mLinearLayout.addView(mTextView); 
     dgv.addView(mLinearLayout); 

    } 
}