如何在Android中的两个选项卡之间传递值 [英] how to pass value betweeen two tab in android

问题描述

我已经按照android标签主机指南进行操作，并且能够在模拟器上运行.现在，我要做的就是在一个tabview中实现一个文本框和一个按钮.一旦用户在文本框中输入并按下按钮，在文本框中输入的值就会传递到第二个选项卡，我可以将该值用于进一步的计算.

I have followed the tutorial for android tab host and been able to run on emulator. Now what I want to do is just implement a text box and button in one tabview. As soon as user enter in text box and press button the value entered in text box shouls pass to second tab and I can use that value for further calculations.

请指导我如何执行此操作? 谢谢， 阿罗

Please guide me how to do this? Thanks, Alok.

推荐答案

我认为您应该做的是声明一个全局变量:

I think what you should to do is to declare a global variable:

class foobarApp extends Application {

  private String txtValue;

  public String getTxtValue(){
    return txtValue;
  }
  public void setTxtValue(String aString){
    txtValue= aString;
  }
}

因此，当用户按下按钮时:

So, when the user presses the button:

foobarApp myApp = ((foobarApp)getApplicationContext());
setTxtValue(myTextEdit.getText());

然后，在加载第二个选项卡时，您可以通过执行以下操作获得您的价值:

And then, when the second tab loaded, you can get your value by doing this:

foobarApp myApp = ((foobarApp)getApplicationContext());
theOtherEditText.setText(myApp.getTxtValue());

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