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base/src/main/java/com/heyongrui/base/widget/numberruntextview/BigDecimalEvaluator.java

@@ -0,0 +1,19 @@
+package com.heyongrui.base.widget.numberruntextview;
+
+import android.animation.TypeEvaluator;
+
+import java.math.BigDecimal;
+
+/**
+ * Created by lambert on 2018/10/11.
+ */
+
+public class BigDecimalEvaluator implements TypeEvaluator {
+    @Override
+    public Object evaluate(float fraction, Object startValue, Object endValue) {
+        BigDecimal start = (BigDecimal) startValue;
+        BigDecimal end = (BigDecimal) endValue;
+        BigDecimal result = end.subtract(start);
+        return result.multiply(new BigDecimal("" + fraction)).add(start);
+    }
+}

base/src/main/java/com/heyongrui/base/widget/numberruntextview/EditTextWithClear.java

@@ -0,0 +1,101 @@
+package com.heyongrui.base.widget.numberruntextview;
+
+import android.text.Editable;
+import android.text.Selection;
+import android.text.TextWatcher;
+import android.widget.EditText;
+
+/**
+ * Created by lambert on 2018/10/11.
+ * 银行卡号输入框格式（每4位有个空格）
+ */
+
+public class EditTextWithClear implements TextWatcher {
+
+    private EditText mEditText;
+    private char mDivider;
+
+    int beforeTextLength = 0;
+    int onTextLength = 0;
+    boolean isChanged = false;
+
+    int location = 0;// 记录光标的位置
+    private char[] tempChar;
+    private StringBuffer buffer = new StringBuffer();
+    int konggeNumberB = 0;
+
+    public EditTextWithClear(EditText editText, char divider) {
+        mEditText = editText;
+        mDivider = divider;
+    }
+
+    @Override
+    public void onTextChanged(CharSequence s, int start, int before,
+                              int count) {
+        onTextLength = s.length();
+        buffer.append(s.toString());
+        if (onTextLength == beforeTextLength || onTextLength <= 3
+                || isChanged) {
+            isChanged = false;
+            return;
+        }
+        isChanged = true;
+    }
+
+    @Override
+    public void beforeTextChanged(CharSequence s, int start, int count,
+                                  int after) {
+        beforeTextLength = s.length();
+        if (buffer.length() > 0) {
+            buffer.delete(0, buffer.length());
+        }
+        konggeNumberB = 0;
+        for (int i = 0; i < s.length(); i++) {
+            if (s.charAt(i) == mDivider) {
+                konggeNumberB++;
+            }
+        }
+    }
+
+    @Override
+    public void afterTextChanged(Editable s) {
+        if (isChanged) {
+            location = mEditText.getSelectionEnd();
+            int index = 0;
+            while (index < buffer.length()) {
+                if (buffer.charAt(index) == mDivider) {
+                    buffer.deleteCharAt(index);
+                } else {
+                    index++;
+                }
+            }
+
+            index = 0;
+            int spaceNumberCount = 0;//空格的个数
+            while (index < buffer.length()) {
+                if ((index == 4 || index == 9 || index == 14 || index == 19 || index == 24 || index == 29)) {
+                    buffer.insert(index, mDivider);
+                    spaceNumberCount++;
+                }
+                index++;
+            }
+
+            if (spaceNumberCount > konggeNumberB) {
+                location += (spaceNumberCount - konggeNumberB);
+            }
+
+            tempChar = new char[buffer.length()];
+            buffer.getChars(0, buffer.length(), tempChar, 0);
+            String str = buffer.toString();
+            if (location > str.length()) {
+                location = str.length();
+            } else if (location < 0) {
+                location = 0;
+            }
+            mEditText.setText(str);
+            Editable etable = mEditText.getText();
+            Selection.setSelection(etable, location);
+            isChanged = false;
+        }
+    }
+}

base/src/main/java/com/heyongrui/base/widget/numberruntextview/NumberRunningTextView.java

@@ -0,0 +1,198 @@
+package com.heyongrui.base.widget.numberruntextview;
+
+import android.animation.Animator;
+import android.animation.ValueAnimator;
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.text.TextUtils;
+import android.util.AttributeSet;
+import android.widget.TextView;
+
+import com.heyongrui.base.R;
+
+import java.math.BigDecimal;
+import java.text.DecimalFormat;
+
+
+/**
+ * Created by lambert on 2018/10/11.
+ */
+
+@SuppressLint("AppCompatCustomView")
+public class NumberRunningTextView extends TextView {
+
+    private static final int MONEY_TYPE = 0;
+    private static final int NUM_TYPE = 1;
+
+    private int textType;//内容的类型，默认是金钱类型
+    private boolean useCommaFormat;//是否使用每三位数字一个逗号的格式，让数字显得比较好看，默认使用
+    private boolean runWhenChange;//是否当内容有改变才使用动画,默认是
+    private int duration;//动画的周期，默认为800ms
+    private int minNum;//显示数字最少要达到这个数字才滚动 默认为1
+    private float minMoney;//显示金额最少要达到这个数字才滚动 默认为0.3
+    private Animator.AnimatorListener animatorListener;
+
+    private DecimalFormat formatter = new DecimalFormat("0.00");// 格式化金额，保留两位小数
+    private String preStr;
+
+
+    public NumberRunningTextView(Context context) {
+        this(context, null);
+    }
+
+    public NumberRunningTextView(Context context, AttributeSet attrs) {
+        this(context, attrs, android.R.attr.textViewStyle);
+    }
+
+    public NumberRunningTextView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+
+        TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.NumberRunningTextView);
+        duration = ta.getInt(R.styleable.NumberRunningTextView_duration, 1000);
+        textType = ta.getInt(R.styleable.NumberRunningTextView_textType, MONEY_TYPE);
+        useCommaFormat = ta.getBoolean(R.styleable.NumberRunningTextView_useCommaFormat, true);
+        runWhenChange = ta.getBoolean(R.styleable.NumberRunningTextView_runWhenChange, true);
+        minNum = ta.getInt(R.styleable.NumberRunningTextView_minNum, 3);
+        minMoney = ta.getFloat(R.styleable.NumberRunningTextView_minMoney, 0.1f);
+
+        ta.recycle();
+    }
+
+
+    /**
+     * 设置需要滚动的金钱(必须为正数)或整数(必须为正数)的字符串
+     *
+     * @param str
+     */
+    public void setContent(String str) {
+        //如果是当内容改变的时候才执行滚动动画,判断内容是否有变化
+        if (runWhenChange) {
+            if (TextUtils.isEmpty(preStr)) {
+                //如果上一次的str为空
+                preStr = str;
+                useAnimByType(str);
+                return;
+            }
+
+            //如果上一次的str不为空,判断两次内容是否一致
+            if (preStr.equals(str)) {
+                //如果两次内容一致，则不做处理
+                return;
+            }
+
+            preStr = str;//如果两次内容不一致，记录最新的str
+        }
+
+        useAnimByType(str);
+    }
+
+    private void useAnimByType(String str) {
+        if (textType == MONEY_TYPE) {
+            playMoneyAnim(str);
+        } else if (textType == NUM_TYPE) {
+            playNumAnim(str);
+        }
+    }
+
+    public void setAnimatorListener(Animator.AnimatorListener animatorListener) {
+        this.animatorListener = animatorListener;
+    }
+
+    /**
+     * 播放金钱数字动画的方法
+     *
+     * @param moneyStr
+     */
+    public void playMoneyAnim(String moneyStr) {
+        String money = moneyStr.replace(",", "").replace("-", "");//如果传入的数字已经是使用逗号格式化过的，或者含有符号,去除逗号和负号
+        try {
+            BigDecimal bigDecimal = new BigDecimal(money);
+            float finalFloat = bigDecimal.floatValue();
+            if (finalFloat < minMoney) {
+                //如果传入的为0，则直接使用setText()
+                setText(moneyStr);
+                return;
+            }
+            ValueAnimator floatAnimator = ValueAnimator.ofObject(new BigDecimalEvaluator(), new BigDecimal(0), bigDecimal);
+            if (animatorListener != null) {
+                floatAnimator.addListener(animatorListener);
+            }
+            floatAnimator.setDuration(duration);
+            floatAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
+                @Override
+                public void onAnimationUpdate(ValueAnimator animation) {
+                    BigDecimal currentNum = (BigDecimal) animation.getAnimatedValue();
+                    String str = formatter.format(Double.parseDouble(currentNum.toString()));//格式化成两位小数
+                    // 更新显示的内容
+                    if (useCommaFormat) {
+                        //使用每三位数字一个逗号的格式
+                        String formatStr = addComma(str);//三位一个逗号格式的字符串
+                        setText(formatStr);
+                    } else {
+                        setText(str);
+                    }
+                }
+            });
+            floatAnimator.start();
+        } catch (NumberFormatException e) {
+            e.printStackTrace();
+            this.setText(moneyStr);//如果转换Double失败则直接用setText
+        }
+    }
+
+    public String addComma(String str) {
+        str = new StringBuilder(str).reverse().toString();     //先将字符串颠倒顺序
+        if (str.equals("0")) {
+            return str;
+        }
+        String str2 = "";
+        for (int i = 0; i < str.length(); i++) {
+            if (i * 3 + 3 > str.length()) {
+                str2 += str.substring(i * 3, str.length());
+                break;
+            }
+            str2 += str.substring(i * 3, i * 3 + 3) + ",";
+        }
+        if (str2.endsWith(",")) {
+            str2 = str2.substring(0, str2.length() - 1);
+        }
+        //最后再将顺序反转过来
+        String temp = new StringBuilder(str2).reverse().toString();
+        //将最后的,去掉
+        return temp.substring(0, temp.lastIndexOf(",")) + temp.substring(temp.lastIndexOf(",") + 1, temp.length());
+    }
+
+    /**
+     * 播放数字动画的方法
+     *
+     * @param numStr
+     */
+    public void playNumAnim(String numStr) {
+        String num = numStr.replace(",", "").replace("-", "");//如果传入的数字已经是使用逗号格式化过的，或者含有符号,去除逗号和负号
+        try {
+            int finalNum = Integer.parseInt(num);
+            if (finalNum < minNum) {
+                //由于是整数，每次是递增1，所以如果传入的数字比帧数小，则直接使用setText()
+                this.setText(numStr);
+                return;
+            }
+            ValueAnimator intAnimator = new ValueAnimator().ofInt(0, finalNum);
+            if (animatorListener != null) {
+                intAnimator.addListener(animatorListener);
+            }
+            intAnimator.setDuration(duration);
+            intAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
+                @Override
+                public void onAnimationUpdate(ValueAnimator animation) {
+                    int currentNum = (int) animation.getAnimatedValue();
+                    setText(String.valueOf(currentNum));
+                }
+            });
+            intAnimator.start();
+        } catch (NumberFormatException e) {
+            e.printStackTrace();
+            setText(numStr);//如果转换Double失败则直接用setText
+        }
+    }
+}