Java 文本跨越多个edittext,Android
因此,我希望用户输入他/她的汽车牌照,并且我希望通过分隔所有字符(如下图所示)使其非常时尚: 现在,它由6个编辑文本组成,文本观察者可以更改每个输入的焦点。这部分很好,但我的问题是删除och字符。 当用户想要编辑一个字段时,他/她只需单击视图并删除和替换即可。虽然当整个事情出错时,不可能一次删除所有内容,但您必须单击每个视图并手动删除 所以我需要的是,当用户在一个空视图上单击backspace时,它应该将焦点更改为之前的焦点,并删除该字符,依此类推。因此,所有编辑文本都将连接起来,并作为一个整体工作。我试过使用听退格的键盘监听器,但这只适用于手机上的硬件键盘,而不适用于手机上的软键盘 如果有人能为我指出另一个比这个更好的解决方案,我也很高兴 TextWatcher: RegistrationPlateEditText是按顺序列出所有EditText的列表Java 文本跨越多个edittext,Android,java,android,android-edittext,keylistener,textwatcher,Java,Android,Android Edittext,Keylistener,Textwatcher,因此,我希望用户输入他/她的汽车牌照,并且我希望通过分隔所有字符(如下图所示)使其非常时尚: 现在,它由6个编辑文本组成,文本观察者可以更改每个输入的焦点。这部分很好,但我的问题是删除och字符。 当用户想要编辑一个字段时,他/她只需单击视图并删除和替换即可。虽然当整个事情出错时,不可能一次删除所有内容,但您必须单击每个视图并手动删除 所以我需要的是,当用户在一个空视图上单击backspace时,它应该将焦点更改为之前的焦点,并删除该字符,依此类推。因此,所有编辑文本都将连接起来,并作为一个整体
private TextWatcher regPlateTextWatcher=new TextWatcher(){
@重写公共void beforeTextChanged(字符序列s、int start、int count、int after){}
@重写公共void onTextChanged(字符序列、int start、int before、int count){
对于(int i=RegistrationPlateEditText.size()-1;i>=0;i--){
if(registrationPlateEditText.get(i).getText().length()==1&&i!=registrationPlateEditText.size()-1){
registrationPlateEditText.get(i+1).requestFocus();
返回;
}
else if(RegistrationPlateEditText.get(i).getText().length()==1){
InputMethodManager imm=(InputMethodManager)getActivity().getSystemService(Context.INPUT\u方法\u服务);
imm.hideSoftInputFromWindow(view.getWindowToken(),0);
}
}
}
@重写公共void afterextchanged(可编辑的s){}
};
else if(RegistrationPlateEditText.get(i).getText().length()==1){
InputMethodManager imm=(InputMethodManager)getActivity().getSystemService(Context.INPUT\u方法\u服务);
imm.hideSoftInputFromWindow(view.getWindowToken(),0);
}
}
}
@重写公共void afterextchanged(可编辑的s){}
};`
我选择了4个自定义编辑文本,当您按“上一步”时,它的属性是“被选中”。以下是侦听器和CustomEditText元素
mCodeFourEt.setOnEditorActionListener(new EditText.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView textView, int actionId, KeyEvent keyEvent) {
if (actionId == EditorInfo.IME_ACTION_DONE) {
mConfirmBtn.performClick();
return true;
}
return false;
}
});
mCodeTwoEt.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_DEL) {
String text = mCodeTwoEt.getText().toString();
if (text.length() == 0) {
mCodeOneEt.requestFocus();
mCodeOneEt.selectAll();
return true;
}
}
return false;
}
});
mCodeThreeEt.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_DEL) {
String text = mCodeThreeEt.getText().toString();
if (text.length() == 0) {
mCodeTwoEt.requestFocus();
mCodeTwoEt.selectAll();
return true;
}
}
return false;
}
});
mCodeFourEt.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_DEL) {
String text = mCodeFourEt.getText().toString();
if (text.length() == 0) {
mCodeThreeEt.requestFocus();
mCodeThreeEt.selectAll();
return true;
}
}
return false;
}
});
mCodeOneEt.addTextChangedListener(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) {
}
@Override
public void afterTextChanged(Editable editable) {
if (mCodeOneEt.getText().toString().length() > 0) {
mCodeTwoEt.requestFocus();
}
}
});
mCodeTwoEt.addTextChangedListener(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) {
}
@Override
public void afterTextChanged(Editable editable) {
if (mCodeTwoEt.getText().toString().length() > 0) {
mCodeThreeEt.requestFocus();
}
}
});
mCodeThreeEt.addTextChangedListener(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) {
}
@Override
public void afterTextChanged(Editable editable) {
if (mCodeThreeEt.getText().toString().length() > 0) {
mCodeFourEt.requestFocus();
}
}
});
mCodeFourEt.addTextChangedListener(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) {
}
@Override
public void afterTextChanged(Editable editable) {
}
});
现在是自定义edittext类
public class CustomEditText extends android.support.v7.widget.AppCompatEditText {
public CustomEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public CustomEditText(Context context, AttributeSet attrs) {
super(context, attrs);
}
public CustomEditText(Context context) {
super(context);
}
@Override
public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
return new ZanyInputConnection(super.onCreateInputConnection(outAttrs),
true);
}
private class ZanyInputConnection extends InputConnectionWrapper {
public ZanyInputConnection(InputConnection target, boolean mutable) {
super(target, mutable);
}
@Override
public boolean sendKeyEvent(KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN
&& event.getKeyCode() == KeyEvent.KEYCODE_DEL) {
// Un-comment if you wish to cancel the backspace:
// return false;
}
return super.sendKeyEvent(event);
}
@Override
public boolean deleteSurroundingText(int beforeLength, int afterLength) {
// magic: in latest Android, deleteSurroundingText(1, 0) will be called for backspace
if (beforeLength == 1 && afterLength == 0) {
// backspace
return sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL))
&& sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DEL));
}
return super.deleteSurroundingText(beforeLength, afterLength);
}
}
}
只需在XML中使用这个自定义类,并查看上面的示例,该示例针对4个编辑文本