Question

在以下代码中选择“按名称搜索”选项时，单击“ID EditText”框视图。按ID搜索时，单击Name EditText框视图。以下是布局XML文件。

<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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.testingserver.SearchMember" >

    <Spinner
        android:id="@+id/spinner1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="71dp" />

    <Button
        android:id="@+id/button_search"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/editTextName"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="65dp"
        android:text="Search" />

    <EditText
        android:id="@+id/editTextID"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/spinner1"
        android:layout_centerHorizontal="true"
        android:ems="10"
        android:text="ID"
        android:visibility="gone"
         />

    <EditText
        android:id="@+id/editTextName"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/spinner1"
        android:layout_centerHorizontal="true"
        android:ems="10"
        android:text="Name"
        android:visibility="gone"
         />

</RelativeLayout>

活动类功能如下。

package com.example.testingserver;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
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.view.View.OnClickListener;  
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.Toast;

public class SearchMember extends Activity  implements AdapterView.OnItemSelectedListener{
    Integer[] option_values= {0,1, 2, 3};
    EditText editTextID;
    EditText editTextName;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_search_member);

        editTextID= (EditText) findViewById(R.id.editTextID);
        editTextName= (EditText) findViewById(R.id.editTextName);

        String[] options= {"Select","Search By ID", "Search By Name", "Search By Phone"};
        Spinner spin = (Spinner) findViewById(R.id.spinner1);  
        spin.setOnItemSelectedListener(this);  

      //Creating the ArrayAdapter instance having the country list  
        ArrayAdapter aa = new ArrayAdapter(this, android.R.layout.simple_spinner_item, options);
        aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        //Setting the ArrayAdapter data on the Spinner  
        spin.setAdapter(aa);  
    }

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

    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position,
            long id) {
        // TODO Auto-generated method stub
        //EditText editTextID= (EditText) findViewById(R.id.editTextID);
        //EditText editTextName= (EditText) findViewById(R.id.editTextName);
        int opt= position;



        switch(opt){
        case 1:
            editTextID.setVisibility(View.VISIBLE);
            editTextName.setVisibility(View.GONE);
            break;

        case 2:
            editTextName.setVisibility(View.VISIBLE);
            editTextID.setVisibility(View.GONE);
            break;

            default:
        }
        //Toast.makeText(getApplicationContext(), websites[position], Toast.LENGTH_LONG);
    }

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

    }
}

当选择按ID搜索选项变量opt为1但名称编辑文本框变为可见时。当按名称搜索选项时，变量opt是bcome 2，ID编辑框可见。似乎switch语句工作正常。但结果不是我的预期。

Answer 1

请检查可能是您找到另一个名称的id表示带有id的edittextname和带有oncreate名称的edittextid。

Android setVisibility（View.GONE）和setVisibility（View.VISIBLE）无法按预期工作

1 个答案: