Android带清除按钮、密码可见小眼睛的输入框

前言

相信不少小伙伴在开发登录功能时候，或多或少都会用到输入框清除按钮、密码可见与隐藏小眼睛按钮，我之前也是但写这个功能，但是在找回密码、忘记密码里面还要重新写一次很是麻烦，现在我把它只做了一个自定义控件，可以配置清除按钮、密码可见小眼睛是否显示以及图标，有渐隐渐显和横向移动动画，不知道怎么上传可以直接观看的视频，附上三张效果图，可以点击链接观看视频是否是你想要的效果。

一、自定义控件ClearEditText

我的这个自带清除、小眼睛的控件，是一个自定义控件，控件名称ClearEditText.class，继承RelativeLayout并有布局引用。在拷贝到项目里面后，使用时候只需要与普通输入框控件一样，进行相关的配置即可，部分属性需要使用自定义属性，具体见代码。

二、使用步骤

 1.拷贝ClearEditText.class

拷贝ClearEditText.class类到自己的项目里，再考拷贝它相关的布局文件、自定义属性、默认图片即可，下面贴出ClearEditText主要代码：

public class ClearEditText extends RelativeLayout {
 private ImageView ivLeftIcon;
 private EditText myEdie;
 private ImageView ivEditClean;
 private ImageView ivEditEye;
 private boolean isChecked = true;
 private Context mContext;
 private TypedArray mTypedArray;
 private boolean showClean = true;//清空图标是否显示，true:显示
 private boolean showEye = false;//密码可见图标是否显示，true:显示
 private int drawableLeft = -1;//是否显示输入框左侧图片
 private int drawableEyeOpen = R.drawable.clear_icon_eye_open;//可以看见密码小眼睛样式
 private int drawableEyeClose = R.drawable.clear_icon_eye_close;//不可见密码小眼睛样式
 private int drawableClean = R.drawable.clear_icon_close;//清除按钮图片
 private int cleanPadding = 0;//清除按钮padding边距
 private String hintStr;
 private String textStr;
 private int mTextColorHint = Color.BLACK;
 private int mTextColor = Color.BLACK;
 private int mTextSize = -1;
 private int mMaxLength = 2000;
 private int mMaxLines = 1;
 private int mInputType = 0;//输入类型，就做了不限制、数字、文本密码三种
 private boolean isInput = false;//输入1个字符后更改状态为true,保证小眼睛移动一次
 private boolean isHideClean = false;//输入字符后，清除了需要小眼睛归为，清除按钮隐藏
 private int ivWidth = 45;//关闭按钮的宽度

 public ClearEditText(Context context) {
  super(context);
  mContext = context;
  initView();
 }

 public ClearEditText(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
  mContext = context;
  mTypedArray = mContext.obtainStyledAttributes(attrs, R.styleable.myEditText);
  initView();
 }

 public ClearEditText(Context context, AttributeSet attrs) {
  super(context, attrs);
  mContext = context;
  mTypedArray = mContext.obtainStyledAttributes(attrs, R.styleable.myEditText);
  showClean = mTypedArray.getBoolean(R.styleable.myEditText_showClean, showClean);
  drawableClean = mTypedArray.getResourceId(R.styleable.myEditText_drawableClean, drawableClean);
  cleanPadding = mTypedArray.getDimensionPixelSize(R.styleable.myEditText_cleanPadding, cleanPadding);

  showEye = mTypedArray.getBoolean(R.styleable.myEditText_showEye, showEye);
  drawableLeft = mTypedArray.getResourceId(R.styleable.myEditText_drawableLeft, -1);
  drawableEyeClose = mTypedArray.getResourceId(R.styleable.myEditText_drawableEyeClose, drawableEyeClose);
  drawableEyeOpen = mTypedArray.getResourceId(R.styleable.myEditText_drawableEyeOpen, drawableEyeOpen);

  hintStr = mTypedArray.getString(R.styleable.myEditText_hint);
  textStr = mTypedArray.getString(R.styleable.myEditText_text);
  mTextColorHint = mTypedArray.getColor(R.styleable.myEditText_textColorHint, mTextColorHint);
  mTextColor = mTypedArray.getColor(R.styleable.myEditText_textColor, mTextColor);
  mTextSize = mTypedArray.getDimensionPixelSize(R.styleable.myEditText_textSize, mTextSize);
  mMaxLength = mTypedArray.getInteger(R.styleable.myEditText_maxLength, mMaxLength);
  mMaxLines = mTypedArray.getDimensionPixelSize(R.styleable.myEditText_maxLines, mMaxLines);
  mInputType = mTypedArray.getInteger(R.styleable.myEditText_inputType, mInputType);

  mTypedArray.recycle();
  initView();
 }

 // 初始化视图
 private void initView() {
  View view = View.inflate(getContext(), R.layout.clear_layout_view, null);
  ivLeftIcon = (ImageView) view.findViewById(R.id.iv_edit_left_icon);
  myEdie = (EditText) view.findViewById(R.id.view_edit_show);
  ivEditClean = (ImageView) view.findViewById(R.id.iv_edit_clean);
  ivEditEye = (ImageView) view.findViewById(R.id.iv_edit_eye);

  myEdie.setHint(hintStr);
  myEdie.setHintTextColor(mTextColorHint);
  myEdie.setText(textStr);
  myEdie.setTextColor(mTextColor);
  myEdie.setMaxLines(mMaxLines);
  myEdie.setFilters(new InputFilter[]{new InputFilter.LengthFilter(mMaxLength)});
  if (mTextSize != -1) {
   myEdie.setTextSize(TypedValue.COMPLEX_UNIT_PX, mTextSize);
  } else {
   myEdie.setTextSize(15);
  }
  if (mInputType == 1) {
   myEdie.setInputType(InputType.TYPE_CLASS_NUMBER);
  } else if (mInputType == 2) {
   myEdie.setInputType(InputType.TYPE_TEXT_VARIATION_PASSWORD | InputType.TYPE_CLASS_TEXT);
  } else {
   myEdie.setInputType(InputType.TYPE_NUMBER_VARIATION_NORMAL | InputType.TYPE_CLASS_TEXT);
  }
  if (showEye) {
   myEdie.setTransformationMethod(new AsteriskPasswordTransformationMethod());
  }
  if (showClean && showEye) {
   int left = myEdie.getPaddingLeft();
   int top = myEdie.getPaddingTop();
   int bottom = myEdie.getPaddingBottom();
   myEdie.setPadding(left, top, Utils.dp2px(mContext, 90), bottom);
  } else if (!showClean && !showEye) {
   int left = myEdie.getPaddingLeft();
   int top = myEdie.getPaddingTop();
   int right = myEdie.getPaddingRight();
   int bottom = myEdie.getPaddingBottom();
   myEdie.setPadding(left, top, right, bottom);
  } else {
   int left = myEdie.getPaddingLeft();
   int top = myEdie.getPaddingTop();
   int bottom = myEdie.getPaddingBottom();
   myEdie.setPadding(left, top, Utils.dp2px(mContext, 45), bottom);
  }
  
  myEdie.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 (s.length() > 0) {
     isHideClean = false;
    }
   }

   @Override
   public void afterTextChanged(Editable s) {
    if (s.length() > 0 && !isInput) {//输入字符大于0且只有一个字符时候显示清除按钮动画，小眼睛移动出位置给清除按钮使用
     showEditClean();
     moveEditEye();
     isInput = true;
    } else if (s.length() == 0) {//无字符小眼睛归位
     UndoEditEye();
    }
    if (s.length() == 0 & !isHideClean) {
     hideEditClean();
     isHideClean = true;
     isInput = false;
    }
    if (onEditInputListener != null) {
     onEditInputListener.input(getText());
    }
   }
  });

  setEditClean(showClean);
  ivEditClean.setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    myEdie.setText("");
   }
  });
  ivEditClean.setImageResource(drawableClean);
  ivEditClean.setPadding(cleanPadding, cleanPadding, cleanPadding, cleanPadding);

  setEditEye(showEye);
  ivEditEye.setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    if (isChecked) {
     // 输入一个对用户可见的密码
     myEdie.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
     myEdie.setSelection(getText().length());
     ivEditEye.setImageResource(drawableEyeOpen);
     isChecked = false;
    } else {
     // 输入一个对用户不可见的密码
     myEdie.setTransformationMethod(new AsteriskPasswordTransformationMethod());
     myEdie.setSelection(getText().length());
     ivEditEye.setImageResource(drawableEyeClose);
     isChecked = true;
    }
   }
  });
  if (drawableLeft != -1) {
   ivLeftIcon.setVisibility(View.VISIBLE);
   ivLeftIcon.setImageResource(drawableLeft);
  } else {
   ivLeftIcon.setVisibility(View.GONE);
  }
  view.setLayoutParams(new LayoutParams(ViewPager.LayoutParams.MATCH_PARENT, ViewPager.LayoutParams.WRAP_CONTENT));
  addView(view);
 }

 //密码不可见时候，使用*替换密码
 public class AsteriskPasswordTransformationMethod extends PasswordTransformationMethod {
  @Override
  public CharSequence getTransformation(CharSequence source, View view) {
   return new PasswordCharSequence(source);
  }

  private class PasswordCharSequence implements CharSequence {

   private CharSequence mSource;

   public PasswordCharSequence(CharSequence source) {
    mSource = source; // Store char sequence
   }

   public char charAt(int index) {
    return '*'; // This is the important part
   }

   public int length() {
    return mSource.length(); // Return default
   }

   public CharSequence subSequence(int start, int end) {
    return mSource.subSequence(start, end); // Return default
   }
  }

 }

 public String getText() {
  return myEdie.getText().toString().trim();
 }

 public void setText(String text) {
  myEdie.setText(text);
 }

 //代码设置是否显示清除按钮
 public void setEditClean(boolean isCanClose) {
  showClean = isCanClose;
 }

 //代码设置是否显示小眼睛
 public void setEditEye(boolean isCanSee) {
  showEye = isCanSee;
  if (showEye == true) {
   ivEditEye.setVisibility(View.VISIBLE);
  } else {
   ivEditEye.setVisibility(View.GONE);
  }
 }

 private void showEditClean() {
  if (showClean == true) {
   AnimationUtils.showAndHiddenCenterAnimation(ivEditClean, AnimationUtils.AnimationState.STATE_SHOW, 500);
  }
 }

 private void hideEditClean() {
  if (showClean == true) {
   AnimationUtils.showAndHiddenCenterAnimation(ivEditClean, AnimationUtils.AnimationState.STATE_HIDDEN, 500);
  }
 }

 private void moveEditEye() {
  if (showEye) {
   ObjectAnimator.ofFloat(ivEditEye, "translationX", -Utils.dp2px(mContext, ivWidth)).setDuration(500).start();
  }
 }

 private void UndoEditEye() {
  if (showEye) {
   ObjectAnimator.ofFloat(ivEditEye, "translationX", 0).setDuration(500).start();
  }
 }

 public OnEditInputListener onEditInputListener;

 public void setOnEditInputListener(OnEditInputListener listener) {
  onEditInputListener = listener;
 }
 //输入监听
 public interface OnEditInputListener {
  void input(String content);
 }

}

2.使用示例

下面是在xml布局时候，如何使用ClearEditText的示例，部分自定义属性使用xmlns:app="http://schemas.android.com/apk/res-auto"引用调用。app:showEye属性true-显示小眼睛，false-关闭小眼睛。

 <com.huaweixia.clear.ClearEditText
  android:id="@+id/et_login_password"
  android:layout_width="0dp"
  android:layout_height="45dp"
  android:layout_marginTop="30dp"
  android:background="@drawable/line_bg_white_only_bottom_d8"
  android:paddingLeft="10dp"
  app:hint="请输入密码"
  app:layout_constraintLeft_toLeftOf="@id/et_login_number"
  app:layout_constraintRight_toRightOf="@id/et_login_number"
  app:layout_constraintTop_toBottomOf="@id/et_login_number"
  app:showEye="true"
  app:textColor="@color/tv_black_333333"
  app:textColorHint="@color/tv_gray_999999"
  app:textSize="15sp" />

总结

一开始我之前自己用的自带清空、密码可见的自定义输入框，是没有清除按钮显示，密码可见按钮移动动效，清除按钮显示比较僵硬，在清除按钮隐藏时候小眼睛按钮后面有一定空白，显示看着比较别扭，加了动效后视觉上感觉更加顺畅，希望对部分需要的小伙伴有空，下面附上 下载demo的链接 地址，有需要可以下载看看。

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