package com.sets.speedtest.common;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Paint.Style;
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.sets.speedtest.R;
import com.sets.speedtest.constant.C;
import com.sets.speedtest.utils.StringB;
/**
* 带清除按钮的EditText
*
* @author : lipan
* @create_time : 2014年4月15日 下午8:21:13
* @desc :
* @update_time :
* @update_desc :
*
*/
@SuppressLint({ "DrawAllocation", "ClickableViewAccessibility" })
public class ClearEditText extends EditText implements OnFocusChangeListener, TextWatcher
{
// private static final String TAG = "ClearEditText";
public static final int SHAKE_TIMES = 3; // 每秒抖动次数...
private boolean hasBottomBorder; // 是否有下划线
private boolean isNumber; // 是否只能输入数字
/**
* 删除按钮的引用
*/
private Drawable mClearDrawable;
/**
* 控件是否有焦点
*/
private boolean hasFoucs;
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
super(context, attrs, android.R.attr.editTextStyle);
TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.ClearEditText);
hasBottomBorder = typedArray.getBoolean(R.styleable.ClearEditText_has_bottom_border, true);
isNumber = typedArray.getBoolean(R.styleable.ClearEditText_is_number, false);
typedArray.recycle();
init();
}
/**
* 在按钮的底部画一条直线
*/
@Override
protected void onDraw(Canvas canvas)
{
if (hasBottomBorder)
{
Paint paint = new Paint();
paint.setStyle(Style.STROKE);
paint.setColor(getResources().getColor(R.color.comm_line));
canvas.drawLine(0, this.getHeight() - 1, this.getWidth() - 1, this.getHeight() - 1,
paint);
}
super.onDraw(canvas);
}
private void init()
{
// 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)
{
// throw new
// NullPointerException("You can add drawableRight attribute in XML");
mClearDrawable = getResources().getDrawable(R.drawable.selector_text_clear_btn);
}
mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(),
mClearDrawable.getIntrinsicHeight());
// 默认设置隐藏图标
setClearIconVisible(false);
// 设置焦点改变的监听
setOnFocusChangeListener(this);
// 设置输入框里面内容发生改变的监听
addTextChangedListener(this);
}
/**
* 当手指抬起的位置在clean的图标的区域 我们将此视为进行清除操作 getWidth():得到控件的宽度
* event.getX():抬起时的坐标(改坐标是相对于控件本身而言的)
* getTotalPaddingRight():clean的图标左边缘至控件右边缘的距离
* getPaddingRight():clean的图标右边缘至控件右边缘的距离 于是: getWidth() -
* getTotalPaddingRight()表示: 控件左边到clean的图标左边缘的区域 getWidth() -
* getPaddingRight()表示: 控件左边到clean的图标右边缘的区域 所以这两者之间的区域刚好是clean的图标的区域
*
* 为了防止手大按不到..稍微加大点击的判断区域
*/
public static final int OFFSET_ = 10; // 误差值
@Override
public boolean onTouchEvent(MotionEvent event)
{
if (event.getAction() == MotionEvent.ACTION_UP)
{
if (getCompoundDrawables()[2] != null)
{
boolean touchable = event.getX() > (getWidth() - getTotalPaddingRight() - OFFSET_)
&& (event.getX() < ((getWidth() - getPaddingRight() + OFFSET_)));
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)
{
this.hasFoucs = 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 = visible ? mClearDrawable : 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
*/
@Override
public void onTextChanged(CharSequence s, int start, int count, int after)
{
String editable = getText().toString();
// 过滤数字以外的字符
if (isNumber)
{
String str = StringB.stringFilter(C.EXP_NUM, editable);
if (!editable.equals(str))
{
setText(str);
}
setSelection(length());
}
// 根据输入框的内容判断清除按钮的显隐藏
if (hasFoucs)
{
setClearIconVisible(editable.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(2));
}
/**
* 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(400);
return translateAnimation;
}
}