java - RadioButton 值在不同 Activity 中相互重复

Question

我有一个从 Group.java 调用 RadioButton 值到 Add.java 的函数。我在另一个名为 Status.java 的 Activity 中使用相同的函数。现在，每次我从 Group.java 或 Status.java 单击时，结果都会重复。每次单击 RadioButton 时，我的 EditText 都会消失。

组.java

 RadioGroup radiog1;
RadioButton radio1, radio2, radio3, radio4, radio5;



@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_group);
    radiog1 = (RadioGroup) findViewById(R.id.radiog1);
    radio1 = (RadioButton) findViewById(R.id.radio1);
    radio2 = (RadioButton) findViewById(R.id.radio2);
    radio3 = (RadioButton) findViewById(R.id.radio3);
    radio4 = (RadioButton) findViewById(R.id.radio4);
    radio5 = (RadioButton) findViewById(R.id.radio5);
    DisplayMetrics dm = new DisplayMetrics();

    getWindowManager().getDefaultDisplay().getMetrics(dm);

    int width = dm.widthPixels;
    int height = dm.heightPixels;

    getWindow().setLayout((int) (width * .8), (int) (height * .6));


    radio1.setOnClickListener(this);
    radio2.setOnClickListener(this);
    radio3.setOnClickListener(this);
    radio4.setOnClickListener(this);
    radio5.setOnClickListener(this);


}


@Override
public void onClick(View v) {
    Intent returnIntent = getIntent();
    switch (v.getId()) {
        case (R.id.radio1):
            returnIntent.putExtra("GroupTag", "" + radio1.getText());
            setResult(RESULT_OK, returnIntent);
            finish();
            break;
        case (R.id.radio2):
            returnIntent.putExtra("GroupTag","" + radio2.getText());
            setResult(RESULT_OK, returnIntent);
            finish();
            break;
        case (R.id.radio3):
            returnIntent.putExtra("GroupTag", "" + radio3.getText());
            setResult(RESULT_OK, returnIntent);
            finish();
            break;
        case (R.id.radio4):
            returnIntent.putExtra("GroupTag", "" + radio4.getText());
            setResult(RESULT_OK, returnIntent);
            finish();
            break;
        case (R.id.radio5):

            returnIntent.putExtra("GroupTag","" + radio5.getText());
            setResult(RESULT_OK,returnIntent);
            finish();
            break;


    }
}}

状态.java

    RadioButton rb1, rb2, rb3, rb4;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_status);
    DisplayMetrics dm = new DisplayMetrics();

    getWindowManager().getDefaultDisplay().getMetrics(dm);

    int width = dm.widthPixels;
    int height = dm.heightPixels;

    getWindow().setLayout((int) (width * .8), (int) (height * .6));

    rb1 = (RadioButton) findViewById(R.id.rb1);
    rb2 = (RadioButton) findViewById(R.id.rb2);
    rb3 = (RadioButton) findViewById(R.id.rb3);
    rb4 = (RadioButton) findViewById(R.id.rb4);

    rb1.setOnClickListener(this);
    rb2.setOnClickListener(this);
    rb3.setOnClickListener(this);
    rb4.setOnClickListener(this);


}

@Override
public void onClick(View v) {
    Intent returnIntent = getIntent();
    switch (v.getId()) {
        case (R.id.rb1):
            returnIntent.putExtra("StatusTag", "" + rb1.getText());
            setResult(RESULT_OK, returnIntent);
            finish();
            break;
        case (R.id.rb2):
            returnIntent.putExtra("StatusTag","" + rb2.getText());
            setResult(RESULT_OK, returnIntent);
            finish();
            break;
        case (R.id.rb3):
            returnIntent.putExtra("StatusTag", "" + rb3.getText());
            setResult(RESULT_OK, returnIntent);
            finish();
            break;
        case (R.id.rb4):
            returnIntent.putExtra("StatusTag","" + rb4.getText());
            setResult(RESULT_OK, returnIntent);
            finish();
            break;



    }

}}

添加.java

 ImageButton ibtn, ibtn2, ibtn3, ibtn4,ibtn5;
TextView tvgroup;
TextView tvstatus;
int groupRequestCode;
int statusRequestCode;


@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_add);

    tvgroup = (TextView) findViewById(R.id.tvgroup);
    tvstatus = (TextView) findViewById(R.id.tvstatus);

    ibtn = (ImageButton) findViewById(R.id.ibtn);
    ibtn2 = (ImageButton) findViewById(R.id.ibtn2);
    ibtn3 = (ImageButton) findViewById(R.id.ibtn3);
    ibtn4 = (ImageButton) findViewById(R.id.ibtn4);
    ibtn5 = (ImageButton) findViewById(R.id.ibtn5);


    ibtn.setOnClickListener(this);
    ibtn2.setOnClickListener(this);
    ibtn3.setOnClickListener(this);
    ibtn4.setOnClickListener(this);
    ibtn5.setOnClickListener(this);



}


@Override
public void onClick(View v) {
    switch (v.getId()) {
        case (R.id.ibtn):
            startActivityForResult(new Intent(this, Group.class),  groupRequestCode);
            break;
        case (R.id.ibtn2):
            startActivity(new Intent(this, Due_Date.class));
            break;
        case (R.id.ibtn3):
            startActivity(new Intent(this,DueTime.class));
            break;
        case (R.id.ibtn4):
            startActivityForResult(new Intent(this, Status.class), statusRequestCode);
            break;
        case (R.id.ibtn5):
            startActivity(new Intent(this,Assignees.class));
            break;


    }
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == groupRequestCode) { // here you come back from Group.java
        if(resultCode == RESULT_OK){
            // do your stuff here
            String textViewName = data.getStringExtra("GroupTag");
            tvgroup.setText(textViewName);
        }
    }

    if (requestCode == statusRequestCode) { // here you come back from Status.java
        if(resultCode == RESULT_OK){
            // do your stuff here
            String status = data.getStringExtra("StatusTag");
            tvstatus.setText(status);
        }
    }
}}

结果:

我们将不胜感激。

Answer 1

我建议你使用startActivityForResult()在 Activity 之间传递数据的方法。

所以你需要这样修改你的代码:

• 在Add.java

1) 删除这段代码:

    Bundle extra = getIntent().getExtras();
    if (extra != null) {
        String textViewName = extra.getString("SomeTag");
        tvgroup.setText(textViewName);
    }

    Bundle extra2 = getIntent().getExtras();
    if (extra2 != null) {
        String status = extra2.getString("SomeTag");
        tvstatus.setText(status);
    }

2)

• 更改 startActivity(new Intent(this,Group.class));

到 startActivityForResult(new Intent(this,Group.class), groupRequestCode);

• 还有 startActivity(new Intent(this,Status.class));

到 startActivityForResult(new Intent(this,Status.class), statusRequestCode);

PS:groupRequestCode 应该不同于 statusRequestCode(例如 1 和 2)。

3) 覆盖 onAcitivtyResult() 方法:

    @Override
        protected void onActivityResult(int requestCode, int resultCode, Intent data) {
           if (requestCode == groupRequestCode) { // here you come back from Group.java
                if(resultCode == RESULT_OK){
                    // do your stuff here
                    String textViewName = data.getStringExtra("GroupTag");
                    tvgroup.setText(textViewName);
                }
            }

           if (requestCode == statusRequestCode) { // here you come back from Status.java
                if(resultCode == RESULT_OK){
                    // do your stuff here
                    String status = data.getStringExtra("StatusTag");
                    tvstatus.setText(status);
                }
            }
        }

PS:如果你有很多请求代码，你可以使用 switch 而不是 if block 。

• 在Group.java

改变

Intent intent = new Intent(Group.this, Add.class);
intent.putExtra("SomeTag", "" + radio1.getText());
startActivity(intent);

到

Intent returnIntent = getIntent();
returnIntent.putExtra("GroupTag","" + radio1.getText());
setResult(RESULT_OK,returnIntent);
finish();

=> 对其余的 RadioButtons 做同样的事情

• 在Status.java

改变

Intent intent2 = new Intent(Status.this, Add.class);
intent2.putExtra("SomeTag", "" + rb2.getText());
startActivity(intent2);

到

Intent returnIntent = getIntent();
returnIntent.putExtra("StatusTag","" + rb2.getText());
setResult(RESULT_OK, returnIntent);
finish();

=> 对其余的 RadioButtons 做同样的事情