如何遍历视图的元素

I have a view with radios, inputs and a button and when I click it, I want to check that all inputs contain information. How can I iterate through the view's elements in the activity and check if every textview meets the aforementioned requirement ? Thanks.

我有一个带无线电，输入和按钮的视图，当我点击它时，我想检查所有输入是否包含信息。如何遍历活动中的视图元素并检查每个textview是否符合上述要求？谢谢。

3 个解决方案

#1

110

I've done something similar in some code I don't have with me at the moment, but from memory it should be something like this (assuming a parent view LinearLayout with an id of "layout"):

我已经在一些我目前没有的代码中做了类似的事情，但是从内存中它应该是这样的（假设父视图LinearLayout的id为“layout”）：

LinearLayout layout = (LinearLayout)findViewById(R.id.layout);
boolean success = formIsValid(layout);

public boolean formIsValid(LinearLayout layout) {
    for (int i = 0; i < layout.getChildCount(); i++) {
        View v = layout.getChildAt(i);
        if (v instanceof EditText) {
            //validate your EditText here
        } else if (v instanceof RadioButton) {
            //validate RadioButton
        } //etc. If it fails anywhere, just return false.
    }
    return true;
}

#2

To apply the method by kcoppock recursively, you can change it to this:

要通过kcoppock递归应用该方法，您可以将其更改为：

private void loopViews(ViewGroup view) {
    for (int i = 0; i < view.getChildCount(); i++) {
        View v = view.getChildAt(i);

        if (v instanceof EditText) {
            // Do something

        } else if (v instanceof ViewGroup) {

            this.loopViews((ViewGroup) v);
        }
    }
}

#3

Your onClickListener supplies the View v object; use View rV = v.getRootView() to position yourself on the form. Then use rV.findViewWithTag( ... ) or rV.findViewByID(R.id. ... ) to locate your form elements.

onClickListener提供View v对象;使用View rV = v.getRootView（）将自己定位在表单上。然后使用rV.findViewWithTag（...）或rV.findViewByID（R.id ....）来定位表单元素。

#1

110