Question

我有两个编辑文本的输入，这些值从这两个编辑文本中存储，而不是在两个不同的textViews中的下一个活动中显示。我遇到的问题是在输出端，两个文本视图都显示相同的文本，而两个编辑文本的输入值都不同。

这是我的代码。

  public final static String EXTRA_MESSAGE = "com.logcatdev.lovescanner.MESSAGE";   
    public final static String EXTRA_MESSAGE2 = "com.logcatdev.lovescanner.MESSAGE";    


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.names);

    final Button btn = (Button)findViewById(R.id.button1);



    btn.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View arg0) {


            // Do something in response to button
            Intent intent = new Intent(getApplicationContext(), Scan.class);
            EditText editText = (EditText) findViewById(R.id.editText2);
            String message = editText.getText().toString();
            intent.putExtra(EXTRA_MESSAGE, message);


            Intent intent2 = new Intent(getApplicationContext(), Scan.class);

            //get the value of the editText, convert it to string and store it in a string variable

            EditText editText2 = (EditText) findViewById(R.id.editText1);
            String message2 = editText2.getText().toString();


        intent2.putExtra(EXTRA_MESSAGE, message2);
        startActivity(intent);
    }
});

下一次活动

Intent intent = getIntent();


Intent intent2 = getIntent();
    String message = intent.getStringExtra(Names.EXTRA_MESSAGE);
    String message2 = intent2.getStringExtra(Names.EXTRA_MESSAGE2);

    //set the value of message to the textview
    TextView textView = (TextView)findViewById(R.id.textView2);
    textView.setText(message);

    TextView textView1 = (TextView)findViewById(R.id.textView3);
    textView1.setText(message2);

我在哪里做错了？

Answer 1

更改不同值的密钥，例如

public final static String EXTRA_MESSAGE = "com.logcatdev.lovescanner.MESSAGE1";   
public final static String EXTRA_MESSAGE2 = "com.logcatdev.lovescanner.MESSAGE2";

然后将onClickListener更新为：

@Override
public void onClick(View arg0) {
    EditText editText1 = (EditText) findViewById(R.id.editText1);
    EditText editText2 = (EditText) findViewById(R.id.editText2);

    Intent intent = new Intent(getApplicationContext(), Scan.class);
    intent.putExtra(EXTRA_MESSAGE, editText1.getText().toString());
    intent.putExtra(EXTRA_MESSAGE2, editText2.getText().toString());
    startActivity(intent);
}

在您的下一个活动中

Intent intent = getIntent();
String message1 = intent.getStringExtra(Names.EXTRA_MESSAGE);
String message2 = intent.getStringExtra(Names.EXTRA_MESSAGE2);

TextView textView1 = (TextView) findViewById(R.id.textView2);
textView1.setText(message1);

TextView textView2 = (TextView) findViewById(R.id.textView3);
textView2.setText(message2);

Answer 2

你正在创造两种不同的意图。您只需要一个意图来启动第二个活动，然后您可以添加多个String附加功能。所以在你的第一个活动中就是这样做

Intent intent = new Intent(getApplicationContext(), Scan.class);
EditText editText = (EditText) findViewById(R.id.editText2);
String message = editText.getText().toString();
intent.putExtra(EXTRA_MESSAGE, message);


EditText editText2 = (EditText) findViewById(R.id.editText1);
String message2 = editText2.getText().toString();
intent.putExtra(EXTRA_MESSAGE2, message2);

您可以使用

在第二项活动中检索它们

String message = intent.getStringExtra(Names.EXTRA_MESSAGE);
String message2 = intent.getStringExtra(Names.EXTRA_MESSAGE2);

Answer 3

我在第一个活动的java代码中进行了更改

public final static String EXTRA_MESSAGE = "com.logcatdev.lovescanner.MESSAGE";   
        public final static String EXTRA_MESSAGE2 = "com.logcatdev.lovescanner.MESSAGE";    


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.names);

        final Button btn = (Button)findViewById(R.id.button1);



        btn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {


                // Do something in response to button
                Intent intent = new Intent(getApplicationContext(), Scan.class);
                EditText editText = (EditText) findViewById(R.id.editText1);
                String message = editText.getText().toString();
                intent.putExtra(EXTRA_MESSAGE, message);

                //get the value of the editText, convert it to string and store it in a string variable

                EditText editText2 = (EditText) findViewById(R.id.editText2);
                String message2 = editText2.getText().toString();


            intent.putExtra(EXTRA_MESSAGE2, message2);
            startActivity(intent);
        }
    });

发送不同的消息时，您必须发送不同的字符串密钥。使用此代码可以帮助您!!

存储2个编辑文本并在下一个活动中显示

3 个答案: