Android中使用TextView、EditText完成登录验证的代码清单

1、Android中使用TextView、EditText完成登录验证的代码清单范美英（北京信息职业技术学院）摘 要：Android应用开发中可以使用EditText接收用户的输入，可以使用TextView为用户提供文本提示，本文详细罗列了使用TextView、EditText完成登录验证的代码清单。关键词： Android；EditText；TextView；代码清单1 src/MainActivity.java类的代码package com.zyk.verifiedcode;import java.util.Random;import android.annotation.SuppressLi

2、nt;import android.app.Activity;import android.graphics.drawable.Drawable;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.widget.EditText;import android.widget.TextView;import android.widget.Toast;SuppressLint(NewApi) public class MainActivity extends Activit

3、y String pic=UYTY,AQ7R,FEXY,QPWL,39DM,veri_code;int picID,n;TextView tv;EditText edt_code; Override protected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tv=(TextView) this.findViewById(R.id.tv_veriCode); edt_code=(EditText) th

4、is.findViewById(R.id.edt_code); Random r=new Random(); n=r.nextInt(5); switch(n) case 0: picID=R.drawable.verified_code_1; veri_code=pic0; break; case 1: picID=R.drawable.verified_code_2; veri_code=pic1; break; case 2: picID=R.drawable.verified_code_3; veri_code=pic2; break; case 3: picID=R.drawable

5、.verified_code_4; veri_code=pic3; break; case 4: picID=R.drawable.verified_code_5; veri_code=pic4; break; Drawable dr=this.getResources().getDrawable(picID); tv.setBackground(dr); public void clickSub(View v) if(edt_code.getText().toString().equals(veri_code.toUpperCase() Toast.makeText(this, 验证码输入正

6、确, Toast.LENGTH_LONG).show(); else Toast.makeText(this, 验证码输入不正确, Toast.LENGTH_LONG).show(); Override public boolean onCreateOptionsMenu(Menu menu) / Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; 2 res/layout/activity_main.xml的代码清单 3 res/values/str