Android中的keyReleased等价 [英] KeyReleased equivalence in Android
问题描述
在PC,我可以添加一个onKeyListener为一个JTextField听的keyReleased事件。在Android上我用addTextChangedListener。
On PC I can add a onKeyListener for a JTextField to listen keyReleased event. On Android I've used addTextChangedListener.
我在我的Android适用的两个领域的EditText。编辑一个会影响到其他。这将导致程序在堆栈溢出错误失败。
I have two EditText fields in my Android application. Editing one will affect the other. This will cause the program to fail in stack overflow error.
我如何监听手机的键盘,而不是在外地的EditText变化?我不希望程序来调用,因为引起听者无限循环的听众。
How can I listen for the phone's keyboard instead of changes in the EditText field? I don't want the program to invoke the listener because of the infinite loop caused by the listener.
推荐答案
附加onFocusChangedListener并添加TextChangedListener时的EditText具有焦点,当它失去焦点将其删除。
事情是这样的:
Attach a onFocusChangedListener and add the TextChangedListener when a EditText has focus and remove it when it loses focus. Something like this:
EditText1.setOnFocusChangeListener(new OnFocusChangeListener() {
public void onFocusChange(View v, boolean hasFocus) {
if(hasFocus){
((EditText) v).addTextChangedListener(new TextWatcher() {
public void onTextChanged(CharSequence s, int start, int before, int count) {
//
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
//
}
public void afterTextChanged(Editable s) {
// affect EditText2
}
});
}
if(!hasFocus){
((EditText) v).removeTextChangedListener();
}
}
});
}
});
同为EditText2
The same for EditText2
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