Android 之微信支付宝支付密码框点睛提要

本文

http://afra55.github.io/2016/12/22/verification_code_view/

图示

前情提要

思路是用一个横向的 LinearLayout 包 TextView 展示的。

使用手机自带的键盘，监听按键。

Code

Attrs - vcode_attrs.xml

<?xml version="1.0" encoding="utf-8"?>
<resources><declare-styleable name="VerificationCodeView"><attr name="vcodeTextSize" format="dimension" /><attr name="vcodeTextColor" format="color" /><attr name="vcodeBottomIcon" format="reference" /><attr name="vcodeViewCount" format="integer" /><attr name="vcodeItemSpaceSize" format="dimension" /></declare-styleable>
</resources>

resources - vcode_default.xml

<resources><dimen name="default_text_size" >18sp</dimen><dimen name="vcode_text_size" >18sp</dimen><dimen name="vcode_bottom_icon_height">6dp</dimen><dimen name="vcode_bottom_icon_width">48dp</dimen><dimen name="vcode_item_space_size">19dp</dimen><color name="vcode_bottom_icon_bg">#f6a500</color><color name="vcode_bottom_error_icon_bg">#e84849</color><color name="vcode_text_color">#000000</color>
</resources>

drawable - icon_vcode_bottom.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"><corners android:radius="90dp" /><solid android:color="@color/vcode_bottom_icon_bg" /><sizeandroid:height="@dimen/vcode_bottom_icon_height"android:width="@dimen/vcode_bottom_icon_width" />
</shape>

drawable - icon_vcode_err_bottom.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"><corners android:radius="90dp" /><solid android:color="@color/vcode_bottom_error_icon_bg" /><sizeandroid:height="@dimen/vcode_bottom_icon_height"android:width="@dimen/vcode_bottom_icon_width" />
</shape>

Utils - TextViewUtils.java

import android.graphics.drawable.Drawable;
import android.widget.EditText;
import android.widget.TextView;/*** Created by Victor Yang on 2016/12/15 0015.* TextViewUtils.*/public class TextViewUtils {public static void addTextViewLeftIcon(EditText editText, Drawable drawable, int imgSize) {if (editText == null || drawable == null || imgSize <= 0) {return;}drawable.setBounds(0, 0, imgSize, imgSize);editText.setCompoundDrawables(drawable, null, null, null);}public static void addTextViewBottomIcon(TextView textView, Drawable drawable, int imgWidth, int imgHeight) {if (textView == null || drawable == null || imgWidth <= 0) {return;}drawable.setBounds(0, 0, imgWidth, imgHeight);textView.setCompoundDrawables(null, null, null, drawable);}
}

Code - VerificationCodeView.java

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.text.InputType;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.inputmethod.BaseInputConnection;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputMethodManager;
import android.widget.LinearLayout;
import android.widget.TextView;import java.util.ArrayList;
import java.util.List;/*** Created by Victor Yang on 2016/12/19 0019.* 验证码 view*/public class VerificationCodeView extends LinearLayout {public interface CodeCompleteListener{void complete(boolean complete);}// 验证码 text sizeprivate float mVCodeTextSize;// 验证码 text colorprivate int mVCodeTextColor;// 验证码 底部 iconprivate Drawable mVCodeBottomIcon;private Drawable mVCodeBottomErrorIcon;// 验证码 item 之间的空隙private int mVCodeItemCenterSpaceSize;// 存储键盘的输入数字private StringBuilder mCodeStringBuilder;// 存储 验证码 itemprivate List<TextView> mCodeViewList;// 验证码 输入完成 的监听private CodeCompleteListener mCodeCompleteListener;public VerificationCodeView(Context context) {this(context, null);}public VerificationCodeView(Context context, AttributeSet attrs) {this(context, attrs, 0);}public VerificationCodeView(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);init(attrs, defStyleAttr);}private void init(AttributeSet attrs, int defStyle) {TypedArray typedArray = getContext().obtainStyledAttributes(attrs, R.styleable.VerificationCodeView, defStyle, 0);mVCodeTextSize = typedArray.getDimensionPixelSize(R.styleable.VerificationCodeView_vcodeTextSize, getResources().getDimensionPixelSize(R.dimen.vcode_text_size));mVCodeTextColor = typedArray.getColor(R.styleable.VerificationCodeView_vcodeTextColor,getResources().getColor(R.color.vcode_text_color));mVCodeBottomIcon = typedArray.getDrawable(R.styleable.VerificationCodeView_vcodeBottomIcon);if (mVCodeBottomIcon == null) {mVCodeBottomIcon = getResources().getDrawable(R.drawable.icon_vcode_bottom);}mVCodeBottomErrorIcon = typedArray.getDrawable(R.styleable.VerificationCodeView_vcodeBottomIcon);if (mVCodeBottomErrorIcon == null) {mVCodeBottomErrorIcon = getResources().getDrawable(R.drawable.icon_vcode_error_bottom);}int mVCodeViewCount = typedArray.getInt(R.styleable.VerificationCodeView_vcodeViewCount, 4);mVCodeItemCenterSpaceSize = typedArray.getDimensionPixelSize(R.styleable.VerificationCodeView_vcodeItemSpaceSize,getResources().getDimensionPixelSize(R.dimen.vcode_item_space_size));typedArray.recycle();setOrientation(HORIZONTAL);setGravity(Gravity.CENTER);// 获取触摸时焦点setFocusableInTouchMode(true);if (mCodeStringBuilder == null) mCodeStringBuilder = new StringBuilder();mCodeViewList = new ArrayList<>();// 初始化验证码 itemfor (int i = 0; i < mVCodeViewCount; i++) {TextView underLineCodeView = getUnderLineCodeView();mCodeViewList.add(underLineCodeView);addView(underLineCodeView);}}public void setCodeCompleteListener(CodeCompleteListener listener) {mCodeCompleteListener = listener;}private TextView getUnderLineCodeView() {TextView textView = new TextView(getContext());textView.setTextSize(mVCodeTextSize);textView.setTextColor(mVCodeTextColor);textView.setGravity(Gravity.CENTER);int padding = mVCodeItemCenterSpaceSize / 2;textView.setPadding(padding, 0, padding, 0);int bottomIconWidth = (int) getResources().getDimension(R.dimen.vcode_bottom_icon_width);int bottomIconHeight = (int) getResources().getDimension(R.dimen.vcode_bottom_icon_height);TextViewUtils.addTextViewBottomIcon(textView, mVCodeBottomIcon, bottomIconWidth, bottomIconHeight);return textView;}@Overridepublic boolean onTouchEvent(MotionEvent event) {requestFocusFromTouch();requestFocus();// 触摸控件时显示 键盘if (event.getAction() == MotionEvent.ACTION_DOWN) {InputMethodManager imm = (InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE);imm.showSoftInput(this, InputMethodManager.SHOW_FORCED);}return true;}@Overridepublic InputConnection onCreateInputConnection(EditorInfo outAttrs) {// 声明一个数字数字键盘BaseInputConnection fic = new BaseInputConnection(this, false);outAttrs.actionLabel = null;outAttrs.inputType = InputType.TYPE_CLASS_NUMBER;outAttrs.imeOptions = EditorInfo.IME_ACTION_NONE;return fic;}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {if (mCodeStringBuilder == null) mCodeStringBuilder = new StringBuilder();// keyCode = 67 是回退,keyCode = 【7，16】 是数字 【0，9】if (keyCode == 67 && mCodeStringBuilder.length() > 0) {mCodeStringBuilder.deleteCharAt(mCodeStringBuilder.length() - 1);resetCodeShowView();} else if (keyCode >= 7&& keyCode <= 16&& mCodeStringBuilder.length() < mCodeViewList.size()) {mCodeStringBuilder.append(keyCode - 7);resetCodeShowView();}if (mCodeStringBuilder.length() >= mCodeViewList.size() || keyCode == 66) {InputMethodManager imm = (InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE);imm.hideSoftInputFromWindow(getWindowToken(), 0);}return super.onKeyDown(keyCode, event);}private void resetCodeShowView() {if (mCodeStringBuilder == null || mCodeViewList == null || mCodeViewList.size() <= 0) {return;}for (int i = 0 ; i< mCodeViewList.size(); i++) {mCodeViewList.get(i).setText("");if (i < mCodeStringBuilder.length()) {mCodeViewList.get(i).setText(String.valueOf(mCodeStringBuilder.charAt(i)));}}if (mCodeCompleteListener != null) {if (mCodeStringBuilder.length() == mCodeViewList.size()) {mCodeCompleteListener.complete(true);} else {mCodeCompleteListener.complete(false);}}}public void setCodeItemLineDrawable(Drawable drawable) {for (TextView textView : mCodeViewList) {int bottomIconWidth = (int) getResources().getDimension(R.dimen.vcode_bottom_icon_width);int bottomIconHeight = (int) getResources().getDimension(R.dimen.vcode_bottom_icon_height);TextViewUtils.addTextViewBottomIcon(textView, drawable, bottomIconWidth, bottomIconHeight);}}public void resetCodeItemLineDrawable() {setCodeItemLineDrawable(mVCodeBottomIcon);}public void setCodeItemErrorLineDrawable() {for (TextView textView : mCodeViewList) {int bottomIconWidth = (int) getResources().getDimension(R.dimen.vcode_bottom_icon_width);int bottomIconHeight = (int) getResources().getDimension(R.dimen.vcode_bottom_icon_height);TextViewUtils.addTextViewBottomIcon(textView, mVCodeBottomErrorIcon, bottomIconWidth, bottomIconHeight);}}public String getTextString() {return mCodeStringBuilder == null ? "" : mCodeStringBuilder.toString();}
}