怎么在Android中利用EditText对内容进行分割输入

发布时间：2020-12-04 16:23:28

来源：亿速云

阅读：82

作者：Leah

怎么在Android中利用EditText对内容进行分割输入？针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。

自定义EditText

/**

* @Description 分割输入框

* @Author 一花一世界

*/

public class ContentWithSpaceEditText extends EditText {

public static final int TYPE_PHONE = 0;

public static final int TYPE_CARD = 1;

public static final int TYPE_IDCARD = 2;

private int maxLength = 100;

private int contentType;

private int start, count, before;

private String digits;

public ContentWithSpaceEditText(Context context) {

this(context, null);

}

public ContentWithSpaceEditText(Context context, AttributeSet attrs) {

super(context, attrs);

parseAttributeSet(context, attrs);

}

public ContentWithSpaceEditText(Context context, AttributeSet attrs, int defStyleAttr) {

super(context, attrs, defStyleAttr);

parseAttributeSet(context, attrs);

}

private void parseAttributeSet(Context context, AttributeSet attrs) {

TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.ContentWithSpaceEditText, 0, 0);

contentType = ta.getInt(R.styleable.ContentWithSpaceEditText_type, 0);

ta.recycle();

initType();

setSingleLine();

addTextChangedListener(watcher);

}

private void initType() {

if (contentType == TYPE_PHONE) {

maxLength = 13;

digits = "0123456789 ";

setInputType(InputType.TYPE_CLASS_NUMBER);

} else if (contentType == TYPE_CARD) {

maxLength = 23;

digits = "0123456789 ";

setInputType(InputType.TYPE_CLASS_NUMBER);

} else if (contentType == TYPE_IDCARD) {

maxLength = 21;

digits = "0123456789xX ";

setInputType(InputType.TYPE_CLASS_TEXT);

}

setFilters(new InputFilter[]{new InputFilter.LengthFilter(maxLength)});

}

@Override

public void setInputType(int type) {

super.setInputType(type);

// setKeyListener要在setInputType后面调用，否则无效

if (!TextUtils.isEmpty(digits)) {

setKeyListener(DigitsKeyListener.getInstance(digits));

}

}

private TextWatcher watcher = new TextWatcher() {

@Override

public void beforeTextChanged(CharSequence s, int start, int count, int after) {

}

@Override

public void onTextChanged(CharSequence s, int start, int before, int count) {

ContentWithSpaceEditText.this.start = start;

ContentWithSpaceEditText.this.before = before;

ContentWithSpaceEditText.this.count = count;

}

@Override

public void afterTextChanged(Editable s) {

if (s == null) {

return;

}

//判断是否是在中间输入，需要重新计算

boolean isMiddle = (start + count) < (s.length());

//在末尾输入时，是否需要加入空格

boolean isNeedSpace = false;

if (!isMiddle && isSpace(s.length())) {

isNeedSpace = true;

}

if (isMiddle || isNeedSpace || count > 1) {

String newStr = s.toString();

newStr = newStr.replace(" ", "");

StringBuilder sb = new StringBuilder();

int spaceCount = 0;

for (int i = 0; i < newStr.length(); i++) {

sb.append(newStr.substring(i, i + 1));

//如果当前输入的字符下一位为空格(i+1+1+spaceCount)，因为i是从0开始计算的，所以一开始的时候需要先加1

if (isSpace(i + 2 + spaceCount)) {

sb.append(" ");

spaceCount += 1;

}

}

removeTextChangedListener(watcher);

s.replace(0, s.length(), sb);

//如果是在末尾的话,或者加入的字符个数大于零的话(输入或者粘贴)

if (!isMiddle || count > 1) {

setSelection(s.length() <= maxLength ? s.length() : maxLength);

} else if (isMiddle) {

//如果是删除

if (count == 0) {

//如果删除时，光标停留在空格的前面，光标则要往前移一位

if (isSpace(start - before + 1)) {

setSelection((start - before) > 0 ? start - before : 0);

} else {

setSelection((start - before + 1) > s.length() ? s.length() : (start - before + 1));

}

}

//如果是增加

else {

if (isSpace(start - before + count)) {

setSelection((start + count - before + 1) < s.length() ? (start + count - before + 1) : s.length());

} else {

setSelection(start + count - before);

}

}

}

addTextChangedListener(watcher);

}

}

};

private boolean isSpace(int length) {

if (contentType == TYPE_PHONE) {

return isSpacePhone(length);

} else if (contentType == TYPE_CARD) {

return isSpaceCard(length);

} else if (contentType == TYPE_IDCARD) {

return isSpaceIDCard(length);

}

return false;

}

private boolean isSpacePhone(int length) {

return length >= 4 && (length == 4 || (length + 1) % 5 == 0);

}

private boolean isSpaceCard(int length) {

return length % 5 == 0;

}

private boolean isSpaceIDCard(int length) {

return length > 6 && (length == 7 || (length - 2) % 5 == 0);

}

public void setContentType(int contentType) {

this.contentType = contentType;

initType();

}

public String getTextWithoutSpace() {

return super.getText().toString().replace(" ", "");

}

/**

* @Description 内容校验

*/

public boolean isContentCheck() {

String text = getTextWithoutSpace();

if (contentType == TYPE_PHONE) {

if (TextUtils.isEmpty(text)) {

ToastUtil.showText(UIUtils.getString(R.string.phone_number_not_empty));

} else if (text.length() < 11) {

ToastUtil.showText(UIUtils.getString(R.string.phone_number_incorrect_length));

} else {

return true;

}

} else if (contentType == TYPE_CARD) {

if (TextUtils.isEmpty(text)) {

ToastUtil.showText(UIUtils.getString(R.string.bank_card_not_empty));

} else if (text.length() < 16) {

ToastUtil.showText(UIUtils.getString(R.string.bank_card_incorrect_length));

} else {

return true;

}

} else if (contentType == TYPE_IDCARD) {

if (TextUtils.isEmpty(text)) {

ToastUtil.showText(UIUtils.getString(R.string.identity_number_not_empty));

} else if (text.length() < 18) {

ToastUtil.showText(UIUtils.getString(R.string.identity_number_incorrect_length));

} else {

return true;

}

}

return false;

}

}

配置attrs.xml

布局文件中使用

xmlns:app="http://schemas.android.com/apk/res-auto"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:background="@color/theme_bg"

android:orientation="vertical">

android:id="@+id/titleView"

android:layout_width="match_parent"

android:layout_height="wrap_content" />

android:layout_width="match_parent"

android:layout_height="@dimen/item_normal"

android:layout_margin="@dimen/margin_normal"

android:gravity="center_vertical"

android:orientation="horizontal">

android:layout_width="@dimen/btn_width_normal"

android:layout_height="match_parent"

android:gravity="center_vertical"

android:text="@string/phone_number"

android:textColor="@color/blue"

android:textSize="@dimen/font_normal" />

android:id="@+id/edt_phone_input"

android:layout_width="match_parent"

android:layout_height="@dimen/item_normal"

android:background="@color/white"

android:gravity="center"

android:hint="@string/please_enter_content"

android:inputType="number"

android:textColor="@color/blue"

android:textColorHint="@color/gray"

android:textCursorDrawable="@null"

android:textSize="@dimen/font_normal"

app:type="phone" />

android:layout_width="match_parent"

android:layout_height="@dimen/item_normal"

android:layout_margin="@dimen/margin_normal"

android:gravity="center_vertical"

android:orientation="horizontal">

android:layout_width="@dimen/btn_width_normal"

android:layout_height="match_parent"

android:gravity="center_vertical"

android:text="@string/bank_card_number"

android:textColor="@color/blue"

android:textSize="@dimen/font_normal" />

android:id="@+id/edt_bank_card_input"

android:layout_width="match_parent"

android:layout_height="@dimen/item_normal"

android:background="@color/white"

android:gravity="center"

android:hint="@string/please_enter_content"

android:inputType="number"

android:textColor="@color/blue"

android:textColorHint="@color/gray"

android:textCursorDrawable="@null"

android:textSize="@dimen/font_normal"

app:type="card" />

android:layout_width="match_parent"

android:layout_height="@dimen/item_normal"

android:layout_margin="@dimen/margin_normal"

android:gravity="center_vertical"

android:orientation="horizontal">

android:layout_width="@dimen/btn_width_normal"

android:layout_height="match_parent"

android:gravity="center_vertical"

android:text="@string/identity_number"

android:textColor="@color/blue"

android:textSize="@dimen/font_normal" />

android:id="@+id/edt_identity_input"

android:layout_width="match_parent"

android:layout_height="@dimen/item_normal"

android:background="@color/white"

android:gravity="center"

android:hint="@string/please_enter_content"

android:inputType="number"

android:textColor="@color/blue"

android:textColorHint="@color/gray"

android:textCursorDrawable="@null"

android:textSize="@dimen/font_normal"

app:type="IDCard" />

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