ViewStub的父视图组

发布于 2024-11-07 07:09:27 字数 598 浏览 4 评论 0原文

该异常 ava.lang.IllegalStateException 的含义是什么

：ViewStub 必须有一个非空 ViewGroup viewParent

我正在创建一个 View Stub 数组并将它们添加到 LinearLayout 但此异常在运行时显示

for(int i=0;i&lt;1;i++)
{
  try
     {
       stub[0]=new ViewStub(getApplicationContext(),R.layout.view_stub_layout);

      //Viewv=stub[i].inflate(getApplicationContext(),R.layout.view_stub_layout,mainLayout);
      //stub[0].setLayoutResource(R.layout.view_stub_layout);
      View v;
      v=stub[0].inflate();
      mainLayout.addView(v);
      v=null;
  }
  catch(Exception e){
      e.getMessage();
  }
}

原文

What is the meaning of that exception

ava.lang.IllegalStateException: ViewStub must have a non-null ViewGroup viewParent

i am creating an array of View Stub and adding them to a linearLayout but this exception is showing at run time

for(int i=0;i<1;i++)
{
  try
     {
       stub[0]=new ViewStub(getApplicationContext(),R.layout.view_stub_layout);

      //Viewv=stub[i].inflate(getApplicationContext(),R.layout.view_stub_layout,mainLayout);
      //stub[0].setLayoutResource(R.layout.view_stub_layout);
      View v;
      v=stub[0].inflate();
      mainLayout.addView(v);
      v=null;
  }
  catch(Exception e){
      e.getMessage();
  }
}

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○闲身 2024-11-14 07:09:27

您的 ViewStub 没有父级，这就是您捕获异常的原因。您必须首先在 Layout 中添加 ViewStub，然后才能将其膨胀到另一个 View。

为什么使用 ViewStub？你真的需要它吗？也许这可能是一个很好的解决方案：

try {
    View.inflate(getApplicationContext(), R.layout.view_stub_layout, mainLayout);
} catch(Exception e){
    e.getMessage();
}

如果您需要保留添加的视图：

try {
    views[i] = View.inflate(getApplicationContext(), R.layout.view_stub_layout, null);
    mainLayout.add(views[i]);
} catch(Exception e){
    e.getMessage();
}

Your ViewStub don't have a parent, that's why you catch Exception. You must add ViewStub in Layout at first, after you can inflate it to another View.

Why you use ViewStub? Do you really need it? Maybe it can be good solution:

try {
    View.inflate(getApplicationContext(), R.layout.view_stub_layout, mainLayout);
} catch(Exception e){
    e.getMessage();
}

If you need to keep added Views:

try {
    views[i] = View.inflate(getApplicationContext(), R.layout.view_stub_layout, null);
    mainLayout.add(views[i]);
} catch(Exception e){
    e.getMessage();
}

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