如何动态更改可绘制的颜色和形状？

Question

我正在创建活动。我为事件创建了动态视图。

现在我想为我的活动设置颜色。我可绘制设置形状到事件视图。我想在动态创建视图时更改视图的颜色。

我试图通过setBackgroundColor（）设置颜色; ，但颜色延伸了视图的形状。我怎样才能动态改变drawable的颜色？

事件查看XML布局：

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:id="@+id/Parent"> 
    <RelativeLayout 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:background="@drawable/shape" 
     android:id="@+id/container" 
     android:layout_marginLeft="60dp" 
     android:layout_marginRight="12dp"> 

     <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:textAppearance="?android:attr/textAppearanceSmall" 
      android:id="@+id/textViewTitle" 
      android:layout_marginLeft="10dp" 
      android:textColor="@android:color/white" 
      android:layout_marginTop="01dp" 
      android:layout_alignParentStart="true" /> 

    </RelativeLayout> 
</RelativeLayout> 

形状绘制：

<shape android:shape="rectangle" xmlns:android="http://schemas.android.com/apk/res/android"> 


    <stroke android:width="2dip"/> 

    <stroke android:color="@color/black" android:width="1dip"/> 
    <corners android:radius="4dp"> </corners> 

</shape> 

周一片段：

public class Mon extends Fragment { 

    private FrameLayout fab; 
    private EventTableHelper mDb; 
    private Intent i; 
    private ViewGroup dayplanView; 
    private int minutesFrom,minutesTo; 
    private List<EventData> events; 
    private List<View> list; 
    private EventData e; 
    private LayoutInflater inflater; 
    public boolean editMode; 
    private RelativeLayout container; 
    RelativeLayout parent; 
    View eventView; 
    private boolean mCheckFragment; 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     inflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    } 
    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     View view = inflater.inflate(R.layout.fragment_mon, container, false); 
     list = new ArrayList<View>(); 


     dayplanView = (ViewGroup) view.findViewById(R.id.hoursRelativeLayout); 

     showEvents(); 


     mCheckFragment = true; 


     return view; 
    } 

    private void createEvent(LayoutInflater inflater, ViewGroup dayplanView, int fromMinutes, int toMinutes, String title,String location,final int id,int color) { 

     eventView = inflater.inflate(R.layout.event_view, dayplanView, false); 
     RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) eventView.getLayoutParams(); 

     container = (RelativeLayout) eventView.findViewById(R.id.container); 
     TextView tvTitle = (TextView) eventView.findViewById(R.id.textViewTitle); 
     list.add(eventView); 

     eventView.setBackgroundColor(color); 

     if (tvTitle.getParent() != null) 
      ((ViewGroup) tvTitle.getParent()).removeView(tvTitle); 

     if(location.equals("")) 
     { 
      tvTitle.setText("Event : " + title); 
     } 
     else 
     { 
      tvTitle.setText("Event : " + title + " (At : " + location +")"); 
     } 
     int distance = (toMinutes - fromMinutes); 
     layoutParams.topMargin = dpToPixels(fromMinutes + 9); 
     layoutParams.height = dpToPixels(distance); 

     eventView.setLayoutParams(layoutParams); 
     dayplanView.addView(eventView); 
     container.addView(tvTitle); 



     eventView.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 

       i = new Intent(getActivity(), AddEventActivity.class); 
       editMode = true; 
       i.putExtra("EditMode", editMode); 
       i.putExtra("id", id); 
       startActivityForResult(i, 1); 

      } 
     }); 
    } 

    public void showEvents() 
    { 
     mDb = new EventTableHelper(getActivity()); 
     events = mDb.getAllEvents("Mon"); 

     for (EventData eventData : events) { 

      int id = eventData.getId(); 
      String datefrom = eventData.getFromDate(); 

      if (datefrom != null) { 
       String[] times = datefrom.substring(11, 16).split(":"); 
       minutesFrom = Integer.parseInt(times[0]) * 60 + Integer.parseInt(times[1]); 
      } 
      String title = eventData.getTitle(); 
      String location = eventData.getLocation(); 
      String dateTo = eventData.getToDate(); 
      int color = eventData.getColor(); 


      if (dateTo != null) { 
       //times = dateTo.substring(11,16).split(":"); 
       String[] times1 = dateTo.substring(11, 16).split(":"); 
       minutesTo = Integer.parseInt(times1[0]) * 60 + Integer.parseInt(times1[1]); 
      } 
      createEvent(inflater, dayplanView, minutesFrom, minutesTo, title, location, id, color); 
      id++; 


     } 
    } 

    public void removeView() 
    { 
     for(int i=0; i<list.size(); i++) 
     { 
      View view = (View)list.get(i); 
      dayplanView.removeView(view); 
     } 
    } 

    private int dpToPixels(int dp) { 
     return (int) (dp * getResources().getDisplayMetrics().density); 
    } 

    @Override 
    public void onResume() 
    { 

     super.onResume(); 

     if(mCheckFragment) 
     { 
      removeView(); 
      showEvents(); 

     } 

    } 

} 

它看起来像这样： 比K优..

Answer 1

你可以删除第一个相对布局和修改此行eventView.setBackgroundColor(color);只是这样的：

((GradientDrawable)eventView.getBackground()).setColor(color);