Android学习进阶02——使用Bundle在Activity之间交换数据

MainActivity：

super.onCreate(savedInstanceState);

  setContentView(R.layout.activity_main);

  Button submit = (Button)findViewById(R.id.submit);

  submit.setOnClickListener(new View.OnClickListener() {

   

   @Override

   public void onClick(View v) {

    String user = ((EditText)findViewById(R.id.user)).getText().toString();

    String psw = ((EditText)findViewById(R.id.pwd)).getText().toString();

    String repsw = ((EditText)findViewById(R.id.repwd)).getText().toString();

    String email = ((EditText)findViewById(R.id.email)).getText().toString();// TODO Auto-generated method stub

    if((!"".equals(user))&&(!"".equals(psw))&&(!"".equals(repsw))){

     if(!psw.equals(repsw)){

      Toast.makeText(MainActivity.this, "两次输入的密码不同", Toast.LENGTH_SHORT).show();

      ((EditText)findViewById(R.id.pwd)).setText("");

      ((EditText)findViewById(R.id.repwd)).setText("");

//      让密码编辑框获得焦点

      ((EditText)findViewById(R.id.pwd)).requestFocus();//if(!pwd.e)

     }

     else{

      Intent intent = new Intent(MainActivity.this,RegisterActivity.class);

//      创建并实例化一个bundle

      Bundle bundle = new Bundle();

      bundle.putCharSequence("user", user);

      bundle.putCharSequence("psw", psw);

      bundle.putCharSequence("email", email);

      intent.putExtras(bundle);

      startActivity(intent);

     }

    }else {

     Toast.makeText(MainActivity.this, "请将信息输入完整", Toast.LENGTH_SHORT).show();

    }

   }

  });

RegisterActivity:

super.onCreate(savedInstanceState);

  setContentView(R.layout.register);

//  获取Intent对象

  Intent intent=getIntent();

//  获取传递的数据包

  Bundle bundle=intent.getExtras();

  TextView user= (TextView)findViewById(R.id.user);

  user.setText("用户名："+bundle.getString("user"));

  TextView pwd=(TextView)findViewById(R.id.pwd);

  pwd.setText("密码： "+bundle.getString("psw"));

  TextView email=(TextView)findViewById(R.id.email);

  email.setText("E-mail:"+bundle.getString("email"));