如何为一个 activity 设置两个 xml？如果我 select 一个选项，我必须得到一个 xml，反之亦然？

Question

如果我 select "New customer" 在 customertype spinner(spn_cust) 中，我必须显示一个包含 button,Spinner,Edittext,textview.If i [=24= 的视图] "Existing Customer" 我必须得到另一个包含 Button,Edittext 的视图。这怎么可能？我应该隐藏一个 xml 而 select 一个选项吗？我将如何以编程方式解决这个问题？

pncustomertype.setOnItemSelectedListener(new OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1,
                int position, long arg3) {
            //String item = spncustomertype.getItemAtPosition(position).toString();



        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
            // TODO Auto-generated method stub

        }
    });

Answer 1

有很多可用的解决方案：

最简单：findViewbyID 和 setVisibility 到您的按钮
创建不同的 xml 布局并将它们与 include 标签组合，setVisibility 事件。
创建不同的xml布局，使用LayoutInflater膨胀每个xml文件并通过代码

Answer 2

如果与元素相关的操作（即按钮、编辑文本等）根据所选选项（新客户或现有客户）而不同，最好创建两个不同的视图类 View1（包含按钮,Spinner,Edittext,Textview）和View2（包含Button,Edittext）。

public class View1 extends RelativeLayout{
//put your code and use 
//View view = layoutInflater.inflate(R.layout.YOUR_LAYOUT, this); to inflate your layout
}

 public class View2 extends RelativeLayout{
    //put your code and use 
    //View view = layoutInflater.inflate(R.layout.YOUR_LAYOUT, this); to inflate your layout
    }

现在将这些视图添加到视图组（例如 Linearlayout、RelativeLayout 等）， viewgroup.addView(View1/View2) 取决于您的选择（新客户或现有客户）。

Answer 3

You can do it by setting visibilities in xml and code. 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" 
android:paddingLeft="16dp"
    android:paddingRight="16dp"
    android:paddingTop="16dp"
    android:paddingBottom="16dp" 
tools:context=".MainActivity">


    <Spinner
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/spinner"
        android:layout_alignParentTop="true"
        android:layout_alignParentStart="true" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button"
        android:id="@+id/button"
        android:layout_below="@+id/spinner"
        android:layout_alignParentStart="true"
        android:visibility="gone"/>

    <Spinner
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/spinner2"
        android:layout_below="@+id/button"
        android:layout_alignParentStart="true"
        android:visibility="gone"/>

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/editText"
        android:text="edit_Text"
        android:layout_below="@+id/spinner2"
        android:layout_alignParentStart="true"
        android:visibility="gone"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:text="Medium Text"
        android:id="@+id/textView"
        android:layout_centerVertical="true"
        android:layout_alignParentStart="true"
        android:visibility="gone"/>


</RelativeLayout>

package com.example.user.spinnerapp;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;


public class MainActivity extends Activity{
private Button button;
   private  Spinner spinner;
    private EditText editText;
    private TextView textView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final List<String> spinnerArray =  new ArrayList<>();
        spinnerArray.add("New Customer");
        spinnerArray.add("Existing Customer");

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(
                this, android.R.layout.simple_spinner_item, spinnerArray);

       // adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        final Spinner sItems = (Spinner) findViewById(R.id.spinner);
        button = (Button)findViewById(R.id.button);
        spinner = (Spinner)findViewById(R.id.spinner2);
        editText = (EditText)findViewById(R.id.editText);
        textView = (TextView)findViewById(R.id.textView);

        sItems.setAdapter(adapter);



       sItems.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
           @Override
           public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

               //String selected = spinnerArray.get(position);
               String selected = sItems.getSelectedItem().toString();

               if (selected.equals("New Customer")) {
                   button.setVisibility(View.VISIBLE);
                   spinner.setVisibility(View.VISIBLE);
                   editText.setVisibility(View.VISIBLE);
                   textView.setVisibility(View.VISIBLE);

               }
               else if(selected.equals("Existing Customer")){

                   spinner.setVisibility(View.INVISIBLE);
                   textView.setVisibility(View.INVISIBLE);
               }
           }

           @Override
           public void onNothingSelected(AdapterView<?> parent) {

           }
       });



    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

设置2xmls 使用必填字段创建 xml 并根据您的条件扩充它们。

如何为一个 activity 设置两个 xml？如果我 select 一个选项，我必须得到一个 xml，反之亦然？

How to set two xml's for one activity?If i select one option i have to get one xml and vice versa?

xml

android

view