如何获得TextWatcher方法方面有何看法? [英] How to get the View in TextWatcher method context?
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问题描述
我有一个处理程序,它是一个 TextWatcher
,我不知道如何让查看
已更改文本
下面是我的处理程序:
TextWatcher处理程序=新TextWatcher(){ @覆盖
公共无效onTextChanged(CharSequence中,诠释开始,诠释之前,诠释计数){
// TODO自动生成方法存根 } @覆盖
公共无效beforeTextChanged(CharSequence中,诠释开始,诠释计数后INT){
oldText = s.toString();
} @覆盖
公共无效afterTextChanged(编辑S){
//v.setText(\"afterTextChanged);
}
};
请注意注释的一部分,这就是我想要的东西,得到查看
从的EditText
已触发的情况下,文本更改后更改文本。
我怎样才能达到的 afterTextChanged 的事件这里面 .setText()
的方法? (像onClick事件的看法是 v
)
解决方案
公共静态类MyTextWatcher实现TextWatcher { 私人的EditText mEditText; 公共MyTextWatcher(EditText上EDITTEXT){
mEditText = EDITTEXT;
} @覆盖
公共无效onTextChanged(CharSequence中,诠释开始,诠释之前,诠释计数){
oldText = mEditText.toString();
}
....
}
通过添加:
mFirstEditText.addTextChangedListener(新MyTextWatcher(mFirstEditText));
I have a handler that is a TextWatcher
and i dont know how to get the View
that has changed text.
Here is my handler:
TextWatcher handler = new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
oldText = s.toString();
}
@Override
public void afterTextChanged(Editable s) {
//v.setText("afterTextChanged");
}
};
Note the commented part, that is what i want, to get the View
from the EditText
that has triggered the event, to change the text after the text was changed.
How i can reach this .setText()
method inside the afterTextChanged event? (Like onClick event that view is v
)
解决方案
public static class MyTextWatcher implements TextWatcher {
private EditText mEditText;
public MyTextWatcher(EditText editText) {
mEditText = editText;
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
oldText = mEditText.toString();
}
....
}
Add it with:
mFirstEditText.addTextChangedListener(new MyTextWatcher(mFirstEditText));
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