安卓开发入门基础之双向传递延伸

xml1布局构思

总体是一个垂直的线性布局
再往里包含1个文本框，1个水平（横向）排列的线性布局
水平（横向）排列的线性布局里面放2个按钮

xml2布局构思

1个文本框，1个按钮即可

xml3布局构思

也是1个文本框，1个按钮即可

Mainactivity.java

对代码不懂的话可以参考一下我先前写的安卓开发入门基础之Intent双向传递
没有什么变动，基本上就是点击activity内的按钮进行两两相互传值

private String message_to_cpjl = "From Staff : Hello Product manager! What's our tasks?";
private String message_to_laoban = "From Staff : Hello Boss! I feel ill. Can I go on vacation?";
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    tocpjl = (TextView) findViewById(R.id.staff);
    btnjl = (Button) findViewById(R.id.btntojl);
    btnjl.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(getApplicationContext(),Main2Activity.class);
            intent.putExtra("001", message_to_cpjl);
            startActivityForResult(intent,0x01);
        }
    });
    btnlb = (Button) findViewById(R.id.btntolb);
    btnlb.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(getApplicationContext(),Main3Activity.class);
            intent.putExtra("003",message_to_laoban);
            startActivityForResult(intent,0x02);
        }
    });
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if(requestCode==0x01){
        String extra = data.getStringExtra("002");
        tocpjl.setText(extra);
    }
    if(requestCode==0x02){
        String extra = data.getStringExtra("003");
        tocpjl.setText(extra);
    }
}

Mainactivity2.java

private String message_to_staff = "From Product manager : Hello Staff ! We should solve these proplems together.";
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main2);
    rece = (TextView) findViewById(R.id.recefromyg);
    rece.setText(getIntent().getStringExtra("001"));
    backbtn = (Button) findViewById(R.id.btntoyg);

    backbtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent =new Intent(getApplicationContext(),MainActivity.class);
            intent.putExtra("002", message_to_staff);
            setResult(RESULT_OK,intent);
            finish();
        }
    });

Mainactivity3.java

private String message_to_staff = "From Boss : Hello Staff ! You can go home right now.";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main3);
    rece = (TextView) findViewById(R.id.recefromyg);
    rece.setText(getIntent().getStringExtra("003"));
    backbtn = (Button) findViewById(R.id.btntoyg);

    backbtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent =new Intent(getApplicationContext(),MainActivity.class);
            intent.putExtra("003", message_to_staff.toString());
            setResult(RESULT_OK,intent);
            finish();
        }
    });