如何使EditText上重新获得焦点？ [英] How to make EditText regain focus?

问题描述

我有一个EditText和一个按钮一个活动。当pressed的按钮，我称之为

I have one activity with an EditText and a button. When the button is pressed, I call

myEditText.setClickable(false);
myEditText.setFocusable(false);

我还有一个按钮，当pressed，转变活动。

I have another button, which when pressed, changes the activity.

Intent myIntent = new Intent(view.getContext(), DestinationScreen.class);
startActivityForResult(myIntent, 0);

当我从活性2返回到它具有的EditText我的主要活动，我希望它恢复焦点。也就是说，我希望能够在键入它一些新的价值。任何想法，这是怎么可能呢？

When I return from activity2 to my main activity which has the EditText, I want it to regain the focus. That is, I want to be able to type in some new values in it. Any idea how that is possible?

我试图做到这一点，我在主体活动

I tried to do this in my main Activity

startActivityForResult(myIntent, 0);
myEditText = (EditText) findViewById(R.id.textBox);
myEditText.setClickable(true);
myEditText.setFocusable(true);
myEditText.requestFocus();

这似乎并没有工作。

It doesn't seem to work.

推荐答案

正如你所说，你会喜欢的EditText 来重新获得焦点，当你从第二个活动返回。
那么很可能这就是你应该尝试：既然你已经调用与 startActivityForResult 办法（要求code：0）的活性2，你可以利用它：

As you said, you'd like the EditText to regain focus when you return from the second activity.
Then probably that's what you should try: since you are already invoking the activity2 with the startActivityForResult method (requestCode: 0), you could take advantage of it:

您应该重写

onActivityResult(int requestCode, int resultCode, Intent data)

方法的主要活动里面，检查是否请求code == 0 ，如果是这样：

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
    super.onActivityResult(requestCode, resultCode, data);
    switch (requestCode)
    {
        case 0:
            EditText myEditText = (EditText) findViewById(R.id.textBox);
            myEditText.setClickable(true);
            myEditText.setFocusable(true);
            myEditText.requestFocus();
        default:
            break;
    }
}

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