Android仿滴滴出行验证码输入框功能实例代码

最近公司项目中有一个类似滴滴出行填写验证码的弹框，下面是我撸出来的效果：

中间的那个输入密码的6个框框其实就是用shape画的背景，通过监听EditText获取焦点来改变背景，废话少说，直接上代码吧。

2、效果实现

代码内容比较简单，所以大家可以直接看代码

VerificationCodeInput.java

/**
 * @author hydCoder
 * @date 2017/9/22 14:39
 * @desc 输入验证码的自定义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里添加自定义属性
<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>

输入框获取焦点时的背景

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>

输入框没有获取焦点时的背景

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"/>

然后对它设置输入完成后的监听

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;
   }
 });

总结

以上所述是小编给大家介绍的Android仿滴滴出行验证码输入框功能实例代码网站的支持！

来源：https://juejin.im/post/5a30dca9f265da431c704bd3?utm_source=tuicool&utm_medium=referral