带有图标和删除符号的可编辑输入框，用户可以自定义传入的显示图标

来源：互联网发布：北京金山软件大厦编辑：程序博客网时间：2024/05/17 22:48
package com.netease.nim.uikit.common.ui.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.OnTouchListener;import android.widget.EditText;import com.netease.nim.uikit.R;/** * 带有图标和删除符号的可编辑输入框，用户可以自定义传入的显示图标 *  * @author  *  */public class ClearableEditTextWithIcon extends EditText implements OnTouchListener, TextWatcher {   // 删除符号   Drawable deleteImage = getResources().getDrawable(R.drawable.nim_icon_edit_delete);   Drawable icon;   public ClearableEditTextWithIcon(Context context, AttributeSet attrs, int defStyle) {      super(context, attrs, defStyle);      init();   }   public ClearableEditTextWithIcon(Context context, AttributeSet attrs) {      super(context, attrs);      init();   }   public ClearableEditTextWithIcon(Context context) {      super(context);      init();   }   private void init() {      ClearableEditTextWithIcon.this.setOnTouchListener(this);      ClearableEditTextWithIcon.this.addTextChangedListener(this);      deleteImage.setBounds(0, 0, deleteImage.getIntrinsicWidth(), deleteImage.getIntrinsicHeight());      manageClearButton();   }   /**    * 传入显示的图标资源id    *     * @param id    */   public void setIconResource(int id) {      icon = getResources().getDrawable(id);      icon.setBounds(0, 0, icon.getIntrinsicWidth(), icon.getIntrinsicHeight());      manageClearButton();   }    /**     * 传入删除图标资源id     * @param id     */    public void setDeleteImage(int id) {        deleteImage = getResources().getDrawable(id);        deleteImage.setBounds(0, 0, deleteImage.getIntrinsicWidth(), deleteImage.getIntrinsicHeight());        manageClearButton();    }   void manageClearButton() {      if (this.getText().toString().equals(""))         removeClearButton();      else         addClearButton();   }   void removeClearButton() {      this.setCompoundDrawables(this.icon, this.getCompoundDrawables()[1], null, this.getCompoundDrawables()[3]);   }   void addClearButton() {      this.setCompoundDrawables(this.icon, this.getCompoundDrawables()[1], deleteImage,            this.getCompoundDrawables()[3]);   }   @Override   public boolean onTouch(View v, MotionEvent event) {      ClearableEditTextWithIcon et = ClearableEditTextWithIcon.this;      if (et.getCompoundDrawables()[2] == null)         return false;      if (event.getAction() != MotionEvent.ACTION_UP)         return false;      if (event.getX() > et.getWidth() - et.getPaddingRight() - deleteImage.getIntrinsicWidth()) {         et.setText("");         ClearableEditTextWithIcon.this.removeClearButton();      }      return false;   }   @Override   public void onTextChanged(CharSequence s, int start, int before, int count) {      ClearableEditTextWithIcon.this.manageClearButton();   }   @Override   public void beforeTextChanged(CharSequence s, int start, int count, int after) {   }   @Override   public void afterTextChanged(Editable s) {   }}
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