Android--使用显式Intent，实现从登录界面到注册界面的跳转

//Activity_abaka.xml --------------注册界面





    

    

    

    

    

    

    

    

    

    

    

//activity_main.xml -----------登陆界面





    

    

    

    

    

    

    

//MainActivity-----------主Activity

package com.example.abaka.a2_2;

import android.content.Intent;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    @Override

    protected void onCreate(Bundle savedInstanceState)

    {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        Button button=(Button)findViewById(R.id.button2);

        button.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

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

                startActivity(intent);

            }

        });

    }

}

  
//abaka-------子Activity

package com.example.abaka.a2_2;

import android.content.Intent;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

public class abaka extends AppCompatActivity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_abaka);

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

        Button button2=(Button)findViewById(R.id.button2);

        button.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

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

                startActivity(intent);

            }

        });

        button2.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

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

                startActivity(intent);

            }

        });

    }

}

真机测试结果：
点击注册跳转到注册界面
点击确认或取消跳转回登陆界面