Android实现简洁的APP登录界面

今天需求要做一个所有app都有的登录界面，正好巩固一下我们之前学的基础布局知识。

先来看下效果图

1.布局的xml文件

2.java部分代码

public class LoginActivity extends Activity implements View.OnClickListener{
    private static final String TAG = "login";
      Button loginBtn = null;
      EditText useridEt = null;
      EditText passEt = null;
      TextView promptText = null;
     @Override
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_login);
    loginBtn = (Button) findViewById(R.id.loginBtn);
    loginBtn.setOnClickListener(this);
    useridEt = (EditText) findViewById(R.id.userId); 
    passEt = (EditText) findViewById(R.id.pass);
    promptText = (TextView) findViewById(R.id.promptText);
    OkHttpClient okHttpClient = new OkHttpClient.Builder()
        .connectTimeout(10000L, TimeUnit.MILLISECONDS)
        .readTimeout(10000L, TimeUnit.MILLISECONDS)
        .build();
    OkHttpUtils.initClient(okHttpClient);

  @Override
  public void onClick(View v) {
    String userid = useridEt.getText().toString().trim();
    String pass = passEt.getText().toString().trim();
    if(userid.equals("")){
      promptText.setText(R.string.userIdError);
      return ;
    }
    if(pass.equals("")){
      promptText.setText(R.string.passError);
      return ;
    }
 WebConstant.digest = ("Basic " + new String(Base64.encode((userid + ':' + pass).getBytes(), Base64.DEFAULT))).replace("\n", "");

      String url = WebConstant.REQUESTPATH+"/users/" + userid+"?getAll=true";
      OkHttpUtils.get()
          .url(url).addHeader("Authorization", WebConstant.digest).addHeader("Accept-Language","zh-CN")
          .build().execute(new Callback()
          {
            @Override
            public String parseNetworkResponse(Response response, int id) throws Exception {
              String string = response.body().string();
              JSONObject jsonObj = new JSONObject(string);
              if(jsonObj.get("userName")!=null){
                WebConstant.userId = (String)jsonObj.get("userId");
                WebConstant.userName = (String)jsonObj.get("userName");
                return (String) jsonObj.get("userName");
              }
              return null;
            }

            @Override
            public void onError(Call call, Exception e, int id) {
              WebConstant.digest = null;
              promptText.setText(R.string.loginError);
              Log.i(TAG,e.getMessage());
              e.printStackTrace();
            }

            @Override
            public void onResponse(Object response, int id) {
              promptText.setText(R.string.loginSuccess+" "+response);
              Intent intent = new Intent();
              LoginActivity.this.setResult(WebConstant.RESULT_OK, intent);
              LoginActivity.this.finish();
            }
          });

  }
}    

简单的登录，用户名密码验证。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。