我想在multiautocompletetextview中从键盘输入双倍空格时添加逗号。我在谷歌搜索很多东西。但无法实现我的目标。我想用逗号替换用户输入的双倍空格。
很明显,我必须在addtextwatcher listener中的ontextChange()或OnAfterTextChanged()中编写一些逻辑。但是我在添加2个空格后没有得到事件。
我从list中选择单词时已经使用过逗号标记器。但是当用户使用键盘输入双倍空格时我想添加逗号。
提前致谢
答案 0 :(得分:1)
试试这样,我还没试过这段代码
boolean userPressedKey = false ;
int spaceCount = 0;
yourEditText.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
userPressedKey = false ;
}
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
public void onTextChanged(CharSequence s, int start, int before, int count) {
userPressedKey = true;
});
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (userPressedKey) {
if (keyCode == KeyEvent.KEYCODE_SPACE) {
spaceCount ++;
if(spaceCount == 2){
//append comma to the edittext here
Toast.makeText(MainActivity.this, "White space is clicked twice", Toast.LENGTH_LONG).show();
}
return true;
}else{
spaceCount=0;
}
}
super.onKeyDown(keyCode, event);
}
答案 1 :(得分:1)
我可以为您提供的最简单的解决方案是使用String.replace()
,这是一个小代码片段来帮助您
@Override
protected void onCreate(Bundle savedInstanceState) {
...
edt.addTextChangedListener(textWatcher);
}
您要在TextWatcher
EditText
TextWatcher textWatcher = new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
edt.removeTextChangedListener(textWatcher);
String text = edt.getText().toString();
text = text.replace(" ", ",");
edt.setText(text);
edt.setSelection(text.length());
edt.addTextChangedListener(textWatcher);
}
@Override
public void afterTextChanged(Editable editable) {
}
};