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最近公司項目中有一個類似滴滴出行填寫驗證碼的彈框，下面是我擼出來的效果：
中間的那個輸入密碼的6個框框其實就是用shape畫的背景，通過監聽EditText獲取焦點來改變背景，廢話少說，直接上代碼吧。
2、效果實現
代碼內容比較簡單，所以大家可以直接看代碼
VerificationCodeInput.java
/**
* @author hydCoder
* @date 2017/9/22 14:39
* @desc 輸入驗證碼的自定義view
* @email hyd_coder@163.com
*/
public class VerificationCodeInput extends LinearLayout implements TextWatcher, View.OnKeyListener{
private final static String TYPE_NUMBER = "number";
private final static String TYPE_TEXT = "text";
private final static String TYPE_PASSWORD = "password";
private final static String TYPE_PHONE = "phone";
private static final String TAG = "VerificationCodeInput";
private int box = 4;
private int boxWidth = 80;
private int boxHeight = 80;
private int childHPadding = 14;
private int childVPadding = 14;
private String inputType = TYPE_NUMBER;
private Drawable boxBgFocus = null;
private Drawable boxBgNormal = null;
private Listener listener;
private boolean focus = false;
private List<EditText> mEditTextList = new ArrayList<>();
private int currentPosition = 0;
public VerificationCodeInput(Context context, AttributeSet attrs) {
super(context, attrs);
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.vericationCodeInput);
box = a.getInt(R.styleable.vericationCodeInput_box, 4);
childHPadding = (int) a.getDimension(R.styleable.vericationCodeInput_child_h_padding, 0);
childVPadding = (int) a.getDimension(R.styleable.vericationCodeInput_child_v_padding, 0);
boxBgFocus = a.getDrawable(R.styleable.vericationCodeInput_box_bg_focus);
boxBgNormal = a.getDrawable(R.styleable.vericationCodeInput_box_bg_normal);
inputType = a.getString(R.styleable.vericationCodeInput_inputType);
boxWidth = (int) a.getDimension(R.styleable.vericationCodeInput_child_width, boxWidth);
boxHeight = (int) a.getDimension(R.styleable.vericationCodeInput_child_height, boxHeight);
initViews();
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
}
private void initViews() {
for (int i = 0; i < box; i++) {
EditText editText = new EditText(getContext());
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(boxWidth, boxHeight);
layoutParams.bottomMargin = childVPadding;
layoutParams.topMargin = childVPadding;
layoutParams.leftMargin = childHPadding;
layoutParams.rightMargin = childHPadding;
layoutParams.gravity = Gravity.CENTER;
editText.setOnKeyListener(this);
if(i == 0)
setBg(editText, true);
else setBg(editText, false);
editText.setTextColor(Color.BLACK);
editText.setLayoutParams(layoutParams);
editText.setGravity(Gravity.CENTER);
editText.setInputType(EditorInfo.TYPE_CLASS_PHONE);
editText.setFilters(new InputFilter[]{new InputFilter.LengthFilter(1)});
if (TYPE_NUMBER.equals(inputType)) {
editText.setInputType(InputType.TYPE_CLASS_NUMBER);
} else if (TYPE_PASSWORD.equals(inputType)){
editText.setTransformationMethod(PasswordTransformationMethod.getInstance());
} else if (TYPE_TEXT.equals(inputType)){
editText.setInputType(InputType.TYPE_CLASS_TEXT);
} else if (TYPE_PHONE.equals(inputType)){
editText.setInputType(InputType.TYPE_CLASS_PHONE);
}
editText.setId(i);
editText.setEms(1);
editText.addTextChangedListener(this);
addView(editText,i);
mEditTextList.add(editText);
}
}
private void backFocus() {
int count = getChildCount();
EditText editText ;
for (int i = count-1; i>= 0; i--) {
editText = (EditText) getChildAt(i);
if (editText.getText().length() == 1) {
editText.requestFocus();
setBg(mEditTextList.get(i),true);
//setBg(mEditTextList.get(i-1),true);
editText.setSelection(1);
return;
}
}
}
private void focus() {
int count = getChildCount();
EditText editText ;
for (int i = 0; i< count; i++) {
editText = (EditText) getChildAt(i);
if (editText.getText().length() < 1) {
editText.requestFocus();
return;
}
}
}
private void setBg(EditText editText, boolean focus) {
if (boxBgNormal != null && !focus) {
editText.setBackground(boxBgNormal);
} else if (boxBgFocus != null && focus) {
editText.setBackground(boxBgFocus);
}
}
private void setBg(){
int count = getChildCount();
EditText editText ;
for(int i = 0; i< count; i++){
editText = (EditText) getChildAt(i);
if (boxBgNormal != null && !focus) {
editText.setBackground(boxBgNormal);
} else if (boxBgFocus != null && focus) {
editText.setBackground(boxBgFocus);
}
}
}
private void checkAndCommit() {
StringBuilder stringBuilder = new StringBuilder();
boolean full = true;
for (int i = 0 ;i < box; i++){
EditText editText = (EditText) getChildAt(i);
String content = editText.getText().toString();
if ( content.length() == 0) {
full = false;
break;
} else {
stringBuilder.append(content);
}
}
if (full){
if (listener != null) {
listener.onComplete(stringBuilder.toString());
setEnabled(false);
}
}
}
@Override
public void setEnabled(boolean enabled) {
int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
View child = getChildAt(i);
child.setEnabled(enabled);
}
}
public void setOnCompleteListener(Listener listener){
this.listener = listener;
}
@Override
public LayoutParams generateLayoutParams(AttributeSet attrs) {
return new LinearLayout.LayoutParams(getContext(), attrs);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int count = getChildCount();
for (int i = 0; i < count; i++) {
View child = getChildAt(i);
this.measureChild(child, widthMeasureSpec, heightMeasureSpec);
}
if (count > 0) {
View child = getChildAt(0);
int cHeight = child.getMeasuredHeight();
int cWidth = child.getMeasuredWidth();
int maxH = cHeight + 2 * childVPadding;
int maxW = (cWidth + childHPadding) * box + childHPadding;
setMeasuredDimension(resolveSize(maxW, widthMeasureSpec),
resolveSize(maxH, heightMeasureSpec));
}
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
View child = getChildAt(i);
child.setVisibility(View.VISIBLE);
int cWidth = child.getMeasuredWidth();
int cHeight = child.getMeasuredHeight();
int cl = (i) * (cWidth + childHPadding);
int cr = cl + cWidth;
int ct = childVPadding;
int cb = ct + cHeight;
child.layout(cl, ct, cr, cb);
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (start == 0 && count >= 1 && currentPosition != mEditTextList.size() - 1) {
currentPosition++;
mEditTextList.get(currentPosition).requestFocus();
setBg(mEditTextList.get(currentPosition),true);
setBg(mEditTextList.get(currentPosition-1),false);
}
}
@Override
public void afterTextChanged(Editable s) {
if (s.length() == 0) {
} else {
focus();
checkAndCommit();
}
}
@Override
public boolean onKey(View view, int keyCode, KeyEvent event) {
EditText editText = (EditText) view;
if (keyCode == KeyEvent.KEYCODE_DEL && editText.getText().length() == 0) {
int action = event.getAction();
if (currentPosition != 0 && action == KeyEvent.ACTION_DOWN) {
currentPosition--;
mEditTextList.get(currentPosition).requestFocus();
setBg(mEditTextList.get(currentPosition),true);
setBg(mEditTextList.get(currentPosition+1),false);
mEditTextList.get(currentPosition).setText("");
}
}
return false;
}
public interface Listener {
void onComplete(String content);
}
} ··· styles.xml里添加自定義屬性
<declare-styleable name="vericationCodeInput">
<attr name="box" format="integer" />
<attr name="child_h_padding" format="dimension"/>
<attr name="child_v_padding" format="dimension"/>
<attr name="child_width" format="dimension"/>
<attr name="child_height" format="dimension"/>
<attr name="padding" format="dimension"/>
<attr name="box_bg_focus" format="reference"/>
<attr name="box_bg_normal" format="reference"/>
<attr name="inputType" format="string"/>
</declare-styleable>
輸入框獲取焦點時的背景
verification_edit_bg_focus.xml
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#FFFFFF" />
<corners android:radius="8dip" />
<stroke
android:width="2dip"
android:color="@color/auxiliary_color" />
</shape>
輸入框沒有獲取焦點時的背景
verification_edit_bg_normal.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="@color/white" />
<corners android:radius="8dip" />
<stroke
android:width="1dip"
android:color="@color/divide_color"/>
</shape>
在界面中使用
<com.sdalolo.genius.ui.view.VerificationCodeInput android:digits="1234567890" android:id="@+id/verificationCodeInput" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="25dp" android:layout_gravity="center_horizontal" ver:box="6" ver:box_bg_normal="@drawable/verification_edit_bg_normal" ver:box_bg_focus="@drawable/verification_edit_bg_focus" ver:child_h_padding="5dp" android:layout_centerInParent="true" android:layout_marginBottom="16dp"/>
然后對它設置輸入完成后的監聽
verificationCodeInput.setOnCompleteListener(new VerificationCodeInput.Listener() {
@Override
public void onComplete(String content) {
btn_confirm.setEnabled(true);
btn_confirm.setBackgroundResource(R.drawable.btn_bg_shape_enable);
btn_confirm.setTextColor(Color.parseColor("#e4c16a"));
codeNum = content;
}
});
總結
以上所述是小編給大家介紹的Android仿滴滴出行驗證碼輸入框功能實例代碼，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對億速云網站的支持！
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