無法點擊自定義視圖並識別它

Question

我製作了一個表示具有其他屬性的可繪製的自定義視圖。

我在FrameLayout內容中添加了更多自定義視圖到activity xml中。

所以，我在屏幕上有很多自定義視圖。這些自定義視圖是使用db中包含的數據進行定位的，因此它們是以二進制方式創建的。

我的目標是點擊屏幕上顯示的這些自定義視圖之一，識別單擊的自定義視圖並修改繪圖。

事實上，onClick只適用於自定義視圖之一，並且點擊在所有屏幕上執行，而不僅僅在自定義視圖中執行。

我測試了更多的方法，但沒有任何工作。

我的自定義視圖：

public class NodeView extends View { 

private static final String TAG_LOG = NodeView.class.getName(); 

private String _nodeId; 
private int _x; 
private int _y; 
private float _weight; 
private int _type; 
private Drawable _nodeDrawable; 

private int _usingMode; 

private boolean touched; 
private boolean mDownTouch; 

private OnClickListener _onClickListener; 

public void set_onClickListener(OnClickListener _onClickListener) { 
    this._onClickListener = _onClickListener; 
} 

public String get_nodeId() { 
    return _nodeId; 
} 

public void set_nodeId(String _nodeId) { 
    this._nodeId = _nodeId; 
    invalidate(); 
    requestLayout(); 
} 

public int get_x() { 
    return _x; 
} 

public void set_x(int _x) { 
    this._x = _x; 
    invalidate(); 
    requestLayout(); 
} 

public int get_y() { 
    return _y; 
} 

public void set_y(int _y) { 
    this._y = _y; 
    invalidate(); 
    requestLayout(); 
} 

public float get_weight() { 
    return _weight; 
} 

public void set_weight(float _weight) { 
    this._weight = _weight; 
    invalidate(); 
    requestLayout(); 
} 

public int get_type() { 
    return _type; 
} 

public void set_type(int _type) { 
    this._type = _type; 
    invalidate(); 
    requestLayout(); 
} 

public Drawable get_nodeDrawable() { 
    return _nodeDrawable; 
} 

public void set_nodeDrawable(Drawable _nodeDrawable) { 
    this._nodeDrawable = _nodeDrawable; 
    invalidate(); 
    requestLayout(); 
} 

public int get_usingMode() { 
    return _usingMode; 
} 

public void set_usingMode(int _usingMode) { 
    this._usingMode = _usingMode; 
} 

public NodeView(Context context, Node node, int usingMode) { 
    super(context); 
    init(node, usingMode); 
} 

private void init(Node node, int usingMode) { 
    _nodeId = node.getNodeId(); 
    Log.d(TAG_LOG, node.toString()); 
    _x = node.getPosition()[0]; 
    _y = node.getPosition()[1]; 
    _weight = node.getWidth(); 
    _type = node.getType(); 
    set_usingMode(usingMode); 

    // Set the _nodeDrawable depending on node type and using mode 
    switch (get_usingMode()) { 
     case 0: 
      switch (_type) { 
       case 0: 
        _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_node_unselected); 
        _nodeDrawable.setBounds(0, 0, 80, 80); 
        break; 
       case 1: 
        _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_lift_unselected); 
        _nodeDrawable.setBounds(0, 0, 140, 140); 
        break; 
       case 2: 
        _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_wc_unselected); 
        _nodeDrawable.setBounds(0, 0, 115, 115); 
        break; 
       case 3: 
        _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_exit_unselected); 
        _nodeDrawable.setBounds(0, 0, 125, 125); 
        break; 
      } 
      break; 
     case 1: 
      switch (_type) { 
       case 0: 
        _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_node_unselected_nav); 
        _nodeDrawable.setBounds(0, 0, 80, 80); 
        break; 
       case 1: 
        _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_lift_unselected_nav); 
        _nodeDrawable.setBounds(0, 0, 140, 140); 
        break; 
       case 2: 
        _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_wc_unselected_nav); 
        _nodeDrawable.setBounds(0, 0, 115, 115); 
        break; 
       case 3: 
        _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_exit_unselected_nav); 
        _nodeDrawable.setBounds(0, 0, 125, 125); 
        break; 
      } 
      break; 
     case 2: 
      switch (_type) { 
       case 0: 
        _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_node_unselected_em); 
        _nodeDrawable.setBounds(0, 0, 80, 80); 
        break; 
       case 1: 
        _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_lift_unselected_em); 
        _nodeDrawable.setBounds(0, 0, 140, 140); 
        break; 
       case 2: 
        _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_wc_unselected_em); 
        _nodeDrawable.setBounds(0, 0, 115, 115); 
        break; 
       case 3: 
        _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_exit_unselected_em); 
        _nodeDrawable.setBounds(0, 0, 125, 125); 
        break; 
      } 
      break; 
    } 

    touched = false; 

    Log.d(TAG_LOG, "Type: " + _type + ", Using Mode: " + String.valueOf(_usingMode)); 
    invalidate(); 
} 

@Override 
protected void onDraw(Canvas canvas) { 
    super.onDraw(canvas); 

    Log.d(TAG_LOG, "Canvas in"); 

    switch (_type) { 
     case 0: 
      canvas.translate((float) _x - 2, (float) _y + 10); 
      break; 
     case 1: 
      canvas.translate((float) _x - 29, (float) _y - 18); 
      break; 
     case 2: 
      canvas.translate((float) _x - 18, (float) _y - 18); 
      break; 
     case 3: 
      canvas.translate((float) _x - 18, (float) _y - 40); 
      break; 
    } 


    Log.d(TAG_LOG, " x short: " + _x + " y short: " + _y); 
    Log.d(TAG_LOG, " x float: " + (float) _x + " y float: " + (float) _y); 
    if (touched) { 
     _nodeDrawable = getResources().getDrawable(R.drawable.ic_node_selected); 
     _nodeDrawable.setBounds(0, 0, 140, 140); 
     _nodeDrawable.draw(canvas); 
    } else { 
     // Set the _nodeDrawable depending on node type and using mode 
     switch (get_usingMode()) { 
      case 0: 
       switch (_type) { 
        case 0: 
         _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_node_unselected); 
         _nodeDrawable.setBounds(0, 0, 80, 80); 
         break; 
        case 1: 
         _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_lift_unselected); 
         _nodeDrawable.setBounds(0, 0, 140, 140); 
         break; 
        case 2: 
         _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_wc_unselected); 
         _nodeDrawable.setBounds(0, 0, 115, 115); 
         break; 
        case 3: 
         _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_exit_unselected); 
         _nodeDrawable.setBounds(0, 0, 125, 125); 
         break; 
       } 
       break; 
      case 1: 
       switch (_type) { 
        case 0: 
         _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_node_unselected_nav); 
         _nodeDrawable.setBounds(0, 0, 80, 80); 
         break; 
        case 1: 
         _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_lift_unselected_nav); 
         _nodeDrawable.setBounds(0, 0, 140, 140); 
         break; 
        case 2: 
         _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_wc_unselected_nav); 
         _nodeDrawable.setBounds(0, 0, 115, 115); 
         break; 
        case 3: 
         _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_exit_unselected_nav); 
         _nodeDrawable.setBounds(0, 0, 125, 125); 
         break; 
       } 
       break; 
      case 2: 
       switch (_type) { 
        case 0: 
         _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_node_unselected_em); 
         _nodeDrawable.setBounds(0, 0, 80, 80); 
         break; 
        case 1: 
         _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_lift_unselected_em); 
         _nodeDrawable.setBounds(0, 0, 140, 140); 
         break; 
        case 2: 
         _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_wc_unselected_em); 
         _nodeDrawable.setBounds(0, 0, 115, 115); 
         break; 
        case 3: 
         _nodeDrawable = getResources().getDrawable(it.univpm.idstid.ui.R.drawable.ic_exit_unselected_em); 
         _nodeDrawable.setBounds(0, 0, 125, 125); 
         break; 
       } 
       break; 
     } 
     _nodeDrawable.draw(canvas); 

    } 
} 

@Override 
public boolean onTouchEvent(MotionEvent event) { 
    switch (event.getAction()) { 
     case MotionEvent.ACTION_DOWN: 

      touched = !touched; 
      invalidate(); 

      mDownTouch = true; 
      //Toast.makeText(getContext(), String.valueOf(event.getX()) + " " + String.valueOf(event.getY()), Toast.LENGTH_SHORT).show(); 
      return true; 

     case MotionEvent.ACTION_UP: 
      if (mDownTouch) { 
       mDownTouch = false; 
       //performClick(); // Call this method to handle the response, and 
       // thereby enable accessibility services to 
       // perform this action for a user who cannot 
       // click the touchscreen. 
       return true; 
      } 
    } 
    performClick(); 
    return false; // Return false for other touch events 
} 

@Override 
public boolean performClick() { 
    Toast.makeText(getContext(), get_nodeId(), Toast.LENGTH_SHORT).show(); 
    return true; 
} 

我的活動：

public class MapActivity extends AppCompatActivity { 

    private static final String TAG_LOG = it.univpm.idstid.iot4en.MapActivity.class.getName(); 

    ImageView mapImage; 
    public static MenuItem forward; 
    public static MenuItem firstPage; 

    private String nodeSelected; 

    private int _usingMode = 0; 

    // _usingMode = 0 indica un utilizzo dell'applicazione non ancora definito, cioè non si sa ancora se verrà utilizzata 
    // in modalità navigazione o emergenza 

    int initFloorExtra; 

    Graph graphFloor; 

    private NodeView[] nodeViews; 

    ViewGroup nodesContainer; 

    public Graph getGraphFloor() { 
     return graphFloor; 
    } 

    public int get_usingMode() { 
     return _usingMode; 
    } 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_map); 


     ActionBar ab = getSupportActionBar(); 
     ab.setDisplayHomeAsUpEnabled(true); 

     Intent inputIntent = getIntent(); 
     initFloorExtra = inputIntent.getIntExtra("initFloor", 0); 
     String floorString = Integer.toString(initFloorExtra); 

     mapImage = (ImageView) findViewById(R.id.mapFloor); 

     nodesContainer = (ViewGroup) findViewById(R.id.nodesContenitore); 

     graphFloor = Graph.Builder.create(this, floorString) 
       .build(); 

     nodeViews = new NodeView[graphFloor.getNodes().size()]; 
     int i = 0; 

     for (Node n : graphFloor.getNodes()) { 
      nodeViews[i] = new NodeView(this, n, get_usingMode()); 
      nodeViews[i].setId(i); 
      nodeViews[i].setTag(n.getNodeId()); 
      FrameLayout.LayoutParams nodeLp = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT); 
      nodeViews[i].setLayoutParams(nodeLp); 
      Log.d(TAG_LOG, nodeLp.toString()); 
      nodesContainer.addView(nodeViews[i]); 

      i++; 
     } 

     if (initFloorExtra != 0) { 
      getSupportActionBar().setTitle(getResources().getString(R.string.floor_pos) + " " + floorString); 
     } 
     switch (initFloorExtra) { 
      case 145: 
       mapImage.setImageResource(R.drawable.q145); 
       break; 
      case 150: 
       mapImage.setImageResource(R.drawable.q150); 
       break; 
      case 155: 
       mapImage.setImageResource(R.drawable.q155); 
       break; 
     } 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     getMenuInflater().inflate(R.menu.menu_home, menu); 
     firstPage = menu.findItem(R.id.firstPage); 
     forward = menu.findItem(R.id.forward); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     int itemId = item.getItemId(); 
     switch (itemId) { 
      case R.id.firstPage: 
       Intent intent = new Intent(this, InitPositionActivity.class); 
       intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK); 
       startActivity(intent); 
       MapActivity.this.finish(); 
       break; 
      case R.id.forward: 
       Intent nextPage = new Intent(this, ModActivity.class); 
       nextPage.putExtra("initPos", nodeSelected); //TODO: invece degli intent scrivere su db 
       nextPage.putExtra("initFloor", initFloorExtra); 
       startActivity(nextPage); 
       break; 
      case android.R.id.home: // Id relativo alla freccia in alto a sinistra, per tornare alla schermata precedente 
       NavUtils.navigateUpFromSameTask(this); 
       return true; 
     } 
     return super.onOptionsItemSelected(item); 
    } 

} 

活動的xml：

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
xmlns:custom="http://schemas.android.com/apk/res-auto" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:id="@+id/mapactivity" 
android:paddingBottom="@dimen/activity_vertical_margin" 
android:paddingLeft="@dimen/activity_horizontal_margin" 
android:paddingRight="@dimen/activity_horizontal_margin" 
android:paddingTop="@dimen/activity_vertical_margin" 
android:background="@drawable/background_sfumato" 
tools:context="it.univpm.idstid.iot4en.MapActivity"> 

<ImageView 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:id="@+id/mapFloor" 
    android:layout_gravity="center_horizontal"/> 

<FrameLayout 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:id="@+id/nodesContenitore"> 
</FrameLayout> 

Answer 1

NodeView是它的樣子View.OnClickListener。您可以實現View.OnClickListener每個NodeView像

... 
for (Node n : graphFloor.getNodes()) { 
    nodeViews[i] = new NodeView(this, n, get_usingMode()); 
    ... 
    nodeViews[i].setOnClickListener(new View.OnClickListener() { 
     public void onClick(View v) { 
      // Perform nodeview on click 
      // as your requirement, modify the drawable here   
     } 
    }); 
    ... 
}