Question

因此，我有一段代码，我在其中单击用户的按钮即可创建textView。由于它是在运行时之后创建的，因此我不确定ID是什么。但是我想做的是可以选择删除最后添加的textView，并清除所有添加的TextView。谢谢

private TextView createNewTextView(String text)
    {
        ArraySize++;
        final LinearLayout mLayout=findViewById(R.id.linearLayout);
        String newLine=System.getProperty("line.separator");
        final LinearLayout.LayoutParams lparams =new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        ViewGroup.LayoutParams params=(RelativeLayout.LayoutParams) mLayout.getLayoutParams();
        final TextView textView=new TextView(this);
        textView.setLayoutParams(lparams);
        textView.setText("New texT:: "+text+newLine);
        listOfNames.add(text);
        return textView;
    }

Answer 1

如this问题中所述，您只需使用

((ViewGroup) textView.getParent()).removeView(textView);

Answer 2

要删除所有视图：

mLayout.removeAllViews();

要删除最后一个TextView：

mLayout.removeView(mLayout.getChildAt(mLayout.getChildCount()-1));

Answer 3

您可以在此路径中创建XML文件res / values / ids.xml;

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <item name="view_1" type="id"/>
</resources>

然后在Java中添加ID，就像这样

textView.setId(R.id.view_1);

以及要删除它的时间

LinearLayout mLayout=findViewById(R.id.linearLayout);//to find in this specific view
TextView textView = (TextView)mLayout.findViewById(R.id.view_1);
mLayout.removeView(textView);

Answer 4

您将removeViewAt与索引

一起使用

final LinearLayout mLayout=findViewById(R.id.linearLayout)
mLayout.removeViewAt(mLayout.getChildCount()-1); // get the last view

//or using index counter variable
//mLayout.removeViewAt(ArraySize-1); // adjust the value accordingly

或者您可以使用removeView

获取该视图并删除该视图

final LinearLayout mLayout=findViewById(R.id.linearLayout)
View v = mLayout.getChildAt(mLayout.getChildCount()-1);
mLayout.removeView(v);

如何删除动态添加的TextView

4 个答案: