由于项目要求，需要满足UI小姐姐设计的输入框样式，所以要重写EditText，扩展自定义样式，效果如下：
20190621-1235126.gif
不多说啦，直接上码：
package com.lib.widget;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.drawable.Drawable;
import android.support.v4.content.ContextCompat;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import java.lang.reflect.Field;
/**
* 带底部线条和右边清除icon的输入框
*/
@SuppressLint("AppCompatCustomView")
public class GeneralEditText extends EditText implements View.OnTouchListener, View.OnFocusChangeListener, TextWatcher {
private static final String TAG = "GeneralEditText";
private static final String NAME_SPACE = "http://schemas.android.com/apk/res/android";
private Paint mPaint;
private Drawable mClearTextIcon;
private OnFocusChangeListener mOnFocusChangeListener;
private OnTouchListener mOnTouchListener;
// 设置横线默认颜色
private static final String NO_FOCUS_COLOR_STRING = "#FFCBD1D5";
private static final String ON_FOCUS_COLOR_STRING = "#6A6969";
private int defaultLineColor = Color.parseColor(NO_FOCUS_COLOR_STRING);
private int onFocusLineColor = Color.parseColor(ON_FOCUS_COLOR_STRING);
private int lineColor = defaultLineColor;
// 提示文字的默认颜色和线默认颜色一样
private int hintTextColor = defaultLineColor;
// 宽度为3
private float strokeWidth = 3f;
public GeneralEditText(final Context context) {
super(context);
init(context, null);
}
public GeneralEditText(final Context context, final AttributeSet attrs) {
super(context, attrs);
init(context, attrs);
}
public GeneralEditText(final Context context, final AttributeSet attrs, final int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context, attrs);
}
/**
* 初始化
* @param context
* @param attrs
*
* ContextCompat.getColor(context, R.color.color_FFCBD1D5);
*
*/
private void init(Context context, AttributeSet attrs) {
initAttributeFromXml(attrs);
// 初始化画笔
mPaint = new Paint();
mPaint.setStrokeWidth(strokeWidth);
mPaint.setStyle(Paint.Style.FILL);
mPaint.setColor(lineColor);
// 右边的删除图片
final Drawable drawable = ContextCompat.getDrawable(context, R.drawable.icon_enter_delete);
mClearTextIcon = drawable;
int intrinsicWidth = mClearTextIcon.getIntrinsicWidth();
int intrinsicHeight = mClearTextIcon.getIntrinsicHeight();
float fontSize = this.getTextSize();
float wRatio = (fontSize / intrinsicWidth) > 1 ? 1 : (fontSize / intrinsicWidth);
float hRatio = (fontSize / intrinsicHeight) > 1 ? 1 : (fontSize / intrinsicHeight);
int right = (int) (intrinsicWidth * wRatio);
int bottom = (int) (intrinsicHeight * hRatio);
mClearTextIcon.setBounds(0, 0, right, bottom);
setClearIconVisible(false);
setBackground(null);
setHintTextColor(hintTextColor);
addTextChangedListener(this);
super.setOnTouchListener(this);
super.setOnFocusChangeListener(this);
}
/**
* 初始化属性
* @param attrs
*/
private void initAttributeFromXml(AttributeSet attrs) {
if (attrs == null) {
return;
}
// 光标
int cursorValue = attrs.getAttributeResourceValue(NAME_SPACE, "textCursorDrawable", -1);
if (cursorValue == -1) {
// 设置默认的光标颜色
setTextCursorDrawable(R.drawable.cursor_default_color);
}
// 提示文字的字体颜色
int hintValue = attrs.getAttributeResourceValue(NAME_SPACE, "textColorHint", -1);
if (hintValue != -1) {
hintTextColor = ContextCompat.getColor(getContext(), hintValue);
}
TypedArray ta = getContext().obtainStyledAttributes(attrs, R.styleable.GeneralEditText);
if (ta == null) {
return;
}
if (ta.hasValue(R.styleable.GeneralEditText_stroke_width)) {
strokeWidth = ta.getDimension(R.styleable.GeneralEditText_stroke_width, 3);
}
if (ta.hasValue(R.styleable.GeneralEditText_no_focus_line_color)) {
defaultLineColor = ta.getColor(R.styleable.GeneralEditText_no_focus_line_color, Color.parseColor(NO_FOCUS_COLOR_STRING));
}
if (ta.hasValue(R.styleable.GeneralEditText_on_focus_line_color)) {
onFocusLineColor = ta.getColor(R.styleable.GeneralEditText_on_focus_line_color, Color.parseColor(ON_FOCUS_COLOR_STRING));
}
// Recycles the TypedArray, to be re-used by a later caller. After calling
// this function you must not ever touch the typed array again.
ta.recycle();
}
@Override
public void setOnFocusChangeListener(OnFocusChangeListener l) {
mOnFocusChangeListener = l;
}
@Override
public void setOnTouchListener(OnTouchListener l) {
mOnTouchListener = l;
}
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
lineColor = onFocusLineColor;
setClearIconVisible(getText().length() > 0);
} else {
lineColor = defaultLineColor;
setClearIconVisible(false);
}
// 重新设置画笔的颜色
mPaint.setColor(lineColor);
if (mOnFocusChangeListener != null) {
mOnFocusChangeListener.onFocusChange(v, hasFocus);
}
}
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
final int x = (int) motionEvent.getX();
if (mClearTextIcon.isVisible() && x > getWidth() - getPaddingRight() - mClearTextIcon.getIntrinsicWidth()) {
if (motionEvent.getAction() == MotionEvent.ACTION_UP) {
setText("");
}
return true;
}
return mOnTouchListener != null && mOnTouchListener.onTouch(view, motionEvent);
}
@Override
public final void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
if (isFocused()) {
setClearIconVisible(text.length() > 0);
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void afterTextChanged(Editable s) {
}
/**
* 设置右边删除icon的显示
* @param visible
*/
private void setClearIconVisible(final boolean visible) {
mClearTextIcon.setVisible(visible, false);
final Drawable[] compoundDrawables = getCompoundDrawables();
setCompoundDrawables(
compoundDrawables[0],
compoundDrawables[1],
visible ? mClearTextIcon : null,
compoundDrawables[3]);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// 获取控件宽度
int w = this.getWidth();
// 获取控件高度
int h = this.getHeight();
// X方向可滑动的距离
int sx = this.getScrollX();
// Y方向可滑动的距离
int sy = this.getScrollY();
// 获取左边padding
int paddingLeft = this.getPaddingLeft();
// 获取右边padding
int paddingRight = this.getPaddingRight();
// 获取底部的padding
int paddingBottom = this.getPaddingBottom();
float y = paddingBottom > 0 ? h - paddingBottom / 2 + sy : h + sy;
float startX = paddingLeft;
float startY = y;
float stopX = w + sx - paddingRight;
float stopY = y;
/**
* 从下面画线
* canvas.drawLine(float startX, float startY, float stopX, float stopY, Paint paint);
*/
canvas.drawLine(startX, startY, stopX , stopY, mPaint);
}
/**
* 设置光标的颜色
*/
private void setTextCursorDrawable(int drawableId) {
try {
// 获取字段
Field f = TextView.class.getDeclaredField("mCursorDrawableRes");
// 设置字段可以被访问
f.setAccessible(true);
f.set(this, drawableId);
} catch (Exception e) {
e.printStackTrace();
}
}
}
自定义属性，attrs.xml
在布局件中使用
完结。。。