带清除内容的EditText，支持运单格式的输入模式

2019-11-09 16:47:14

字体：大中小

来源：转载

供稿：网友

package com.sfnp.warehouse.widget;import android.content.Context;import android.graphics.drawable.Drawable;import android.text.Editable;import android.text.TextWatcher;import android.util.AttributeSet;import android.view.MotionEvent;import android.view.View;import android.view.View.OnFocusChangeListener;import android.view.animation.Animation;import android.view.animation.CycleInterpolator;import android.view.animation.TranslateAnimation;import android.widget.EditText;import com.sfnp.warehouse.R;public class ClearEditText extends EditText implements OnFocusChangeListener, TextWatcher { /** * 删除按钮的引用 */ PRivate Drawable mClearDrawable; /** * 是否是运单模式 */ private boolean isWaybillMode; //是否改变 private boolean isChanged; public ClearEditText(Context context) { this(context, null); } public ClearEditText(Context context, AttributeSet attrs) { //这里构造方法也很重要，不加这个很多属性不能再xml里面定义 this(context, attrs, android.R.attr.editTextStyle); } public ClearEditText(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); init(context); } private void init(Context context) { //获取EditText的DrawableRight,假如没有设置我们就使用默认的图片 mClearDrawable = getCompoundDrawables()[2]; if (mClearDrawable == null) { mClearDrawable = getResources().getDrawable(R.drawable.ic_edit_clear); } mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(), mClearDrawable.getIntrinsicHeight()); setClearIconVisible(false); setOnFocusChangeListener(this); addTextChangedListener(this); initWaybillMode(); } private void initWaybillMode() { addTextChangedListener(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) { if (isWaybillMode) { if (isChanged) { isChanged = false; return; } isChanged = true; String text = s.toString().replace(" ", ""); StringBuffer sb = new StringBuffer(); int index = 0; while ((index + 3) < text.length()) { sb.append(text.substring(index, index + 3) + " "); index += 3; } sb.append(text.substring(index)); text = sb.toString(); setText(text); setSelection(text.length()); } } @Override public void afterTextChanged(Editable s) { } }); } /** * 因为我们不能直接给EditText设置点击事件，所以我们用记住我们按下的位置来模拟点击事件 * 当我们按下的位置在 EditText的宽度 - 图标到控件右边的间距 - 图标的宽度和 * EditText的宽度 - 图标到控件右边的间距之间我们就算点击了图标，竖直方向没有考虑 */ @Override public boolean onTouchEvent(MotionEvent event) { if (getCompoundDrawables()[2] != null) { if (event.getAction() == MotionEvent.ACTION_UP) { boolean touchable = event.getX() > (getWidth() - getPaddingRight() - mClearDrawable.getIntrinsicWidth()) && (event.getX() < ((getWidth() - getPaddingRight()))); if (touchable) { this.setText(""); } } } return super.onTouchEvent(event); } /** * 当ClearEditText焦点发生变化的时候，判断里面字符串长度设置清除图标的显示与隐藏 */ @Override public void onFocusChange(View v, boolean hasFocus) { if (hasFocus) { setClearIconVisible(getText().length() > 0); } else { setClearIconVisible(false); } } /** * 设置清除图标的显示与隐藏，调用setCompoundDrawables为EditText绘制上去 * * @param visible */ protected void setClearIconVisible(boolean visible) { Drawable right; if (visible) { right = mClearDrawable; } else { right = null; } setCompoundDrawables(getCompoundDrawables()[0], getCompoundDrawables()[1], right, getCompoundDrawables()[3]); } /** * 当输入框里面内容发生变化的时候回调的方法 * 注意：setText()方法，无限递归调用导致栈溢出StackOverflowError */ @Override public void onTextChanged(CharSequence s, int start, int before, int count) { if (hasFocus()) { setClearIconVisible(s.length() > 0); } } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void afterTextChanged(Editable s) { } /** * 设置晃动动画 */ public void setShakeAnimation() { this.setAnimation(shakeAnimation(5)); } /** * 晃动动画 * * @param counts 1秒钟晃动多少下 * @return */ public static Animation shakeAnimation(int counts) { Animation translateAnimation = new TranslateAnimation(0, 10, 0, 0); translateAnimation.setInterpolator(new CycleInterpolator(counts)); translateAnimation.setDuration(1000); return translateAnimation; } /** * 是否是运单模式 * * @param isWaybillMode */ public void setWaybillMode(boolean isWaybillMode) { this.isWaybillMode = isWaybillMode; }}

注意：运单模式输入下，如果EditText设置了setMaxLength长度，那么这个长度要刚好等于运单号的长度加上空格的长度，否则可能出现下标越界的异常

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