以编程方式居中查看位于 GridLayout 内的另一个视图（位于 RelativeLayout 内）

Question

我想将 ImageView 置于按钮的中心（即在 GridLayout 内（即在包含所有内容的 RelativeLayout 内））。我尝试了不同的选项，但 none 有效。

    ImageView image = new ImageView(getApplicationContext());
    image.setImageResource(R.drawable.heart);
    int lastSelectedID = currentIds.get(currentIds.size()-1);
    View lastButton = findViewById(lastSelectedID); //Is inside the GridLayout
    RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(100, 100);
//  lp.addRule(RelativeLayout.CENTER_IN_PARENT);                        
//  lp.addRule(RelativeLayout.CENTER_IN_PARENT, lastSelectedID);                        
//  lp.addRule(RelativeLayout.ABOVE, lastSelectedID);                       
    lp.addRule(RelativeLayout.ALIGN_LEFT, lastSelectedID);                      
    lp.addRule(RelativeLayout.ALIGN_RIGHT, lastSelectedID);                     
    image.setLayoutParams(lp);
    Animation animation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.spark);
    image.startAnimation(animation);
    final ViewGroup mainLayout = (ViewGroup) findViewById(R.id.layout_main); //relative layout that contains all
    mainLayout.addView(image);

我将新的 ImageView 放在 RelativeLayoute 中，而不是其内部 GridLayout。这是因为 ImageView 动画可以移到 GridLayout 之外。

Answer 1

你可以在相对布局中嵌套一个线性布局，然后使用myView.setX(myX)和myView.setY(myY)方法。

希望我能帮到你 :D

Answer 2

我是这样解决的：

RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(100, 100);
lp.addRule(RelativeLayout.ALIGN_LEFT, gridLayout.getId());
lp.addRule(RelativeLayout.ALIGN_TOP, gridLayout.getId());
lp.setMargins(lastButtonPositionX, lastButtonPositionY, 0, 0);

以编程方式居中查看位于 GridLayout 内的另一个视图（位于 RelativeLayout 内）

Center programmatically View inside another view that is inside GridLayout (that is inside RelativeLayout)

android

gridview

android-layout

android-view