帶清除內(nèi)容的EditText，支持運(yùn)單格式的輸入模式

2019-11-09 16:47:14

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供稿：網(wǎng)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 { /** * 刪除按鈕的引用 */ PRivate Drawable mClearDrawable; /** * 是否是運(yùn)單模式 */ private boolean isWaybillMode; //是否改變 private boolean isChanged; public ClearEditText(Context context) { this(context, null); } public ClearEditText(Context context, AttributeSet attrs) { //這里構(gòu)造方法也很重要，不加這個(gè)很多屬性不能再xml里面定義 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) { //獲取EditText的DrawableRight,假如沒(méi)有設(shè)置我們就使用默認(rèn)的圖片 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?yàn)槲覀儾荒苤苯咏oEditText設(shè)置點(diǎn)擊事件，所以我們用記住我們按下的位置來(lái)模擬點(diǎn)擊事件 * 當(dāng)我們按下的位置在 EditText的寬度 - 圖標(biāo)到控件右邊的間距 - 圖標(biāo)的寬度和 * EditText的寬度 - 圖標(biāo)到控件右邊的間距之間我們就算點(diǎn)擊了圖標(biāo)，豎直方向沒(méi)有考慮 */ @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); } /** * 當(dāng)ClearEditText焦點(diǎn)發(fā)生變化的時(shí)候，判斷里面字符串長(zhǎng)度設(shè)置清除圖標(biāo)的顯示與隱藏 */ @Override public void onFocusChange(View v, boolean hasFocus) { if (hasFocus) { setClearIconVisible(getText().length() > 0); } else { setClearIconVisible(false); } } /** * 設(shè)置清除圖標(biāo)的顯示與隱藏，調(diào)用setCompoundDrawables為EditText繪制上去 * * @param visible */ protected void setClearIconVisible(boolean visible) { Drawable right; if (visible) { right = mClearDrawable; } else { right = null; } setCompoundDrawables(getCompoundDrawables()[0], getCompoundDrawables()[1], right, getCompoundDrawables()[3]); } /** * 當(dāng)輸入框里面內(nèi)容發(fā)生變化的時(shí)候回調(diào)的方法 * 注意：setText()方法，無(wú)限遞歸調(diào)用導(dǎo)致棧溢出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) { } /** * 設(shè)置晃動(dòng)動(dòng)畫(huà) */ public void setShakeAnimation() { this.setAnimation(shakeAnimation(5)); } /** * 晃動(dòng)動(dòng)畫(huà) * * @param counts 1秒鐘晃動(dòng)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; } /** * 是否是運(yùn)單模式 * * @param isWaybillMode */ public void setWaybillMode(boolean isWaybillMode) { this.isWaybillMode = isWaybillMode; }}

注意：運(yùn)單模式輸入下，如果EditText設(shè)置了setMaxLength長(zhǎng)度，那么這個(gè)長(zhǎng)度要?jiǎng)偤玫扔谶\(yùn)單號(hào)的長(zhǎng)度加上空格的長(zhǎng)度，否則可能出現(xiàn)下標(biāo)越界的異常

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