如何在android中的片段中动态添加元素 [英] How to add elements dynamically in fragment in android

问题描述

我有片段，我想在点击浮动操作按钮时动态添加元素（textview，按钮）。



我尝试过：



代码：

<前lang = java> @覆盖
public 查看onCreateView（LayoutInflater inflater，ViewGroup容器，
Bundle savedInstanceState）{
// 为此片段的布局充气
View view = inflater.inflate（R.layout.xyz，container，false）;

FloatingActionButton fab =（FloatingActionButton）view.findViewById（R.id.fab）;
fab.setOnClickListener（ new View.OnClickListener（）{
@ Override
public void onClick（查看视图）{

// 点击的新元素



// 点击新元素

}
}）;
返回视图;
}

感谢高级：）

解决方案

下面的示例添加了一个新的LinearLayout，然后在现有的LinearLayout中添加了两个TextView对象。

  private   void  ShowDetail（）{
  final   int  [] idList = {R.string.lblOne，R.string.lblTwo，R.string.lblThree，R.string.lblFour}; 
 LinearLayout llv =（LinearLayout）findViewById（R.id.llvDetail）; 
 setTitle（  item.toString（））; 
  for （ int  id：idList）{
  //  创建LinearLayout  
 LinearLayout ll =  new  LinearLayout（ 此）; 
 ll.setOrientation（LinearLayout.HORIZONTAL）; 
 
  //  为项目标签创建TextView  
 TextView txtLabel =  new  TextView（ this ）; 
 txtLabel.setText（getString（id）+  ：）; 
 txtLabel.setWidth（（ int ）getResources（）。getDimension（R.dimen.activity_label_width））; 
 txtLabel.setTextAppearance（getApplicationContext（），android.R.attr.textAppearanceMedium）; 
  //   txtLabel.setTextSize（TypedValue.COMPLEX_UNIT_PT，8）;  
 ll .addView（txtLabel）; 
 
  //  为项目内容创建TextView  
 TextView txtContent =  new  TextView（ this ）; 
 txtContent.setText（getString（id））; 
 txtContent.setTextSize（TypedValue.COMPLEX_UNIT_PT， 8 ）; 
  //   txtLabel.setTextAppearance（getApplicationContext（），android.R.attr.textAppearanceMedium）;  
 ll.addView（txtContent）; 
  //  添加按钮到XML中定义的LinearLayout  
 llv.addView（ll ）; 
} 

I Have a Fragment, and i want to add elements (textview, button) dynamically when i click on Floating Action Button.

What I have tried:

Code:

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.xyz, container, false);

        FloatingActionButton fab = (FloatingActionButton) view.findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                // new elements on click



                // new elements on click

            }
        });
        return view;
    }

Thanks in Advanced:)

解决方案

The following sample adds a new LinearLayout and then adds two TextView objects to that, all within an existing LinearLayout.

private void ShowDetail() {
    final int[] idList = { R.string.lblOne, R.string.lblTwo, R.string.lblThree, R.string.lblFour }; 
    LinearLayout llv = (LinearLayout)findViewById(R.id.llvDetail);
    setTitle("item.toString()");
    for (int id : idList) {
    // Create LinearLayout
    LinearLayout ll = new LinearLayout(this);
    ll.setOrientation(LinearLayout.HORIZONTAL);
    
    // Create TextView for the item label
    TextView txtLabel = new TextView(this);
    txtLabel.setText(getString(id) + ": ");
    txtLabel.setWidth((int)getResources().getDimension(R.dimen.activity_label_width));
    txtLabel.setTextAppearance(getApplicationContext(), android.R.attr.textAppearanceMedium);
    //		txtLabel.setTextSize(TypedValue.COMPLEX_UNIT_PT, 8);
    ll.addView(txtLabel);
    
    // Create TextView for the item content
    TextView txtContent = new TextView(this);
    txtContent.setText(getString(id));
    txtContent.setTextSize(TypedValue.COMPLEX_UNIT_PT, 8);
    //		txtLabel.setTextAppearance(getApplicationContext(), android.R.attr.textAppearanceMedium);
    ll.addView(txtContent);
    //Add button to LinearLayout defined in XML
    llv.addView(ll);
}

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