设置onClickListner的一个EditText的绘制对象权对象、onClickListner、EditText
2023-09-12 23:38:15
作者：༺♛柠栀♛༻
在我的应用程序，我有一个的EditText 与右侧的搜索图标。我用下面给出的code。
＆LT;的EditText
机器人：ID =@ + ID /搜索
机器人：layout_width =0dp
机器人：layout_height =match_parent
机器人：layout_margin =4dip
机器人：layout_weight =1
机器人：背景=@可绘制/ textfield_search1
机器人：drawableLeft =@可绘制/标志
机器人：drawableRight =@可绘制/ search_icon
机器人：提示=搜索什么......
机器人：填充=4dip
机器人：单线=真/＆GT;
我想设置 onClickListner 分配给正确绘制的搜索图标的图像
。对的EditText 它是如何可能的？
公共类CustomEditText扩展的EditText {
私人绘制对象drawableRight;
私人绘制对象drawableLeft;
私人绘制对象drawableTop;
私人绘制对象drawableBottom;
诠释actionX，actionY;
私人DrawableClickListener clickListener;
公共CustomEditText（上下文的背景下，ATTRS的AttributeSet）{
超（背景下，ATTRS）;
//当您使用这个观点在XML中需要此Contructure
}
公共CustomEditText（上下文的背景下，ATTRS的AttributeSet，诠释defStyle）{
超（背景下，ATTRS，defStyle）;
}
保护无效的OnDraw（帆布油画）{
super.onDraw（画布）;
}
@覆盖
保护无效onSizeChanged（INT W，INT小时，INT oldw，诠释oldh）{
super.onSizeChanged（W，H，oldw，oldh）;
}
@覆盖
公共无效setCompoundDrawables（可绘制左侧，可绘制前，
可绘制权，可绘制底部）{
如果（左！= NULL）{
drawableLeft =左;
}
如果（右！= NULL）{
drawableRight =权利;
}
如果（顶！= NULL）{
drawableTop =顶部;
}
如果（底！= NULL）{
drawableBottom =底部;
}
super.setCompoundDrawables（左，上，右，下）;
}
@覆盖
公共布尔的onTouchEvent（MotionEvent事件）{
矩形边界;
如果（event.getAction（）== MotionEvent.ACTION_DOWN）{
actionX =（int）的event.getX（）;
actionY =（int）的event.getY（）;
如果（drawableBottom！= NULL
＆功放;＆安培; drawableBottom.getBounds（）。包括（actionX，actionY））{
clickListener.onClick（DrawablePosition.BOTTOM）;
返回super.onTouchEvent（事件）;
}
如果（drawableTop！= NULL
＆功放;＆安培; drawableTop.getBounds（）。包括（actionX，actionY））{
clickListener.onClick（DrawablePosition.TOP）;
返回super.onTouchEvent（事件）;
}
//这个工程以来集装箱股份留给0,0起源与边界
如果（drawableLeft！= NULL）{
边界= NULL;
边界= drawableLeft.getBounds（）;
INT X，Y;
INT extraTapArea =（int）的（13 * getResources（）getDisplayMetrics（）密度+0.5）;
X = actionX;
Y = actionY;
如果（！bounds.contains（actionX，actionY））{
/ **给人的+20面积为攻。 * /
X =（int）的（actionX - extraTapArea）;
Y =（INT）（actionY - extraTapArea）;
如果（X LT; = 0）
X = actionX;
如果（γ＆所述; = 0）
Y = actionY;
/ **创建从最小值平方* /
如果（X LT; y）的{
Y = X;
}
}
如果（bounds.contains（X，Y）及＆安培;！clickListener =空）{
clickListener
.onClick（DrawableClickListener.DrawablePosition.LEFT）;
event.setAction（MotionEvent.ACTION_CANCEL）;
返回false;
}
}
如果（drawableRight！= NULL）{
边界= NULL;
边界= drawableRight.getBounds（）;
INT X，Y;
INT extraTapArea = 13;
/ **
*如果用户点击刚刚走出一侧的可绘制的矩形
*不是添加X AND减去y随一定的价值，以致在
*计算X和Y坐标谎言INTO THE DRAWBABLE
* 界。 - 这个过程有利于增加的tappable区
*矩形。
* /
X =（int）的（actionX + extraTapArea）;
Y =（INT）（actionY - extraTapArea）;
/ **由于这是从一宽度可绘制减去x的值
*的看法。使宽度 - tappedarea将导致x坐标中可绘制的结合。
* /
X =的getWidth（） - X;
如果用户点击的x坐标只是宽度近/ * x可能为负。
*如意见宽度= 300和用户水龙头290然后按previous计算
* 290 + 13 = 303。所以减去x上的getWidth（）将导致负值。
*因此，为了避免这个附加价值previous增加，当x为负。
* /
如果（X LT; = 0）{
X + = extraTapArea;
}
/ *如果计算额外tappable区域后，结果为阴性。
*使后减去分配的原始值
* extratapping面积值不会进入负值。
* /
如果（γ＆所述; = 0）
Y = actionY;
/ **如果drawble范围包含x和y的点，然后继续前进。* /
如果（bounds.contains（X，Y）及＆安培;！clickListener =空）{
clickListener
.onClick（DrawableClickListener.DrawablePosition.RIGHT）;
event.setAction（MotionEvent.ACTION_CANCEL）;
返回false;
}
返回super.onTouchEvent（事件）;
}
}
返回super.onTouchEvent（事件）;
}
@覆盖
保护无效的finalize（）抛出的Throwable
drawableRight = NULL;
drawableBottom = NULL;
drawableLeft = NULL;
drawableTop = NULL;
super.finalize（）;
}
公共无效setDrawableClickListener（DrawableClickListener监听器）{
this.clickListener =侦听器;
}
}
另外创建与接口
公共接口DrawableClickListener {
公共静态枚举DrawablePosition {上，下，左，右};
公共无效的onClick（DrawablePosition目标）;
}
不过如果u需要任何帮助，评论
另外设置drawableClickListener在活动文件中的视图。
editText.setDrawableClickListener（新DrawableClickListener（）{
公共无效的onClick（DrawablePosition目标）{
开关（目标）{
情况下左：
//做的东西在这里
打破;
默认：
打破;
}
}
}）;
In my app i have a EditText with a search Icon on the right side. I used the code given below.
<EditText
android:id="@+id/search"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_margin="4dip"
android:layout_weight="1"
android:background="@drawable/textfield_search1"
android:drawableLeft="@drawable/logo"
android:drawableRight="@drawable/search_icon"
android:hint="Search Anything..."
android:padding="4dip"
android:singleLine="true" />
I want to set the onClickListner for the search icon image assigned to the right drawable
of EditText. How it is possible ?
public class CustomEditText extends EditText {
private Drawable drawableRight;
private Drawable drawableLeft;
private Drawable drawableTop;
private Drawable drawableBottom;
int actionX, actionY;
private DrawableClickListener clickListener;
public CustomEditText (Context context, AttributeSet attrs) {
super(context, attrs);
// this Contructure required when you are using this view in xml
}
public CustomEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
}
@Override
public void setCompoundDrawables(Drawable left, Drawable top,
Drawable right, Drawable bottom) {
if (left != null) {
drawableLeft = left;
}
if (right != null) {
drawableRight = right;
}
if (top != null) {
drawableTop = top;
}
if (bottom != null) {
drawableBottom = bottom;
}
super.setCompoundDrawables(left, top, right, bottom);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
Rect bounds;
if (event.getAction() == MotionEvent.ACTION_DOWN) {
actionX = (int) event.getX();
actionY = (int) event.getY();
if (drawableBottom != null
&& drawableBottom.getBounds().contains(actionX, actionY)) {
clickListener.onClick(DrawablePosition.BOTTOM);
return super.onTouchEvent(event);
}
if (drawableTop != null
&& drawableTop.getBounds().contains(actionX, actionY)) {
clickListener.onClick(DrawablePosition.TOP);
return super.onTouchEvent(event);
}
// this works for left since container shares 0,0 origin with bounds
if (drawableLeft != null) {
bounds = null;
bounds = drawableLeft.getBounds();
int x, y;
int extraTapArea = (int) (13 * getResources().getDisplayMetrics().density + 0.5);
x = actionX;
y = actionY;
if (!bounds.contains(actionX, actionY)) {
/** Gives the +20 area for tapping. */
x = (int) (actionX - extraTapArea);
y = (int) (actionY - extraTapArea);
if (x <= 0)
x = actionX;
if (y <= 0)
y = actionY;
/** Creates square from the smallest value */
if (x < y) {
y = x;
}
}
if (bounds.contains(x, y) && clickListener != null) {
clickListener
.onClick(DrawableClickListener.DrawablePosition.LEFT);
event.setAction(MotionEvent.ACTION_CANCEL);
return false;
}
}
if (drawableRight != null) {
bounds = null;
bounds = drawableRight.getBounds();
int x, y;
int extraTapArea = 13;
/**
* IF USER CLICKS JUST OUT SIDE THE RECTANGLE OF THE DRAWABLE
* THAN ADD X AND SUBTRACT THE Y WITH SOME VALUE SO THAT AFTER
* CALCULATING X AND Y CO-ORDINATE LIES INTO THE DRAWBABLE
* BOUND. - this process help to increase the tappable area of
* the rectangle.
*/
x = (int) (actionX + extraTapArea);
y = (int) (actionY - extraTapArea);
/**Since this is right drawable subtract the value of x from the width
* of view. so that width - tappedarea will result in x co-ordinate in drawable bound.
*/
x = getWidth() - x;
/*x can be negative if user taps at x co-ordinate just near the width.
* e.g views width = 300 and user taps 290. Then as per previous calculation
* 290 + 13 = 303. So subtract X from getWidth() will result in negative value.
* So to avoid this add the value previous added when x goes negative.
*/
if(x <= 0){
x += extraTapArea;
}
/* If result after calculating for extra tappable area is negative.
* assign the original value so that after subtracting
* extratapping area value doesn't go into negative value.
*/
if (y <= 0)
y = actionY;
/**If drawble bounds contains the x and y points then move ahead.*/
if (bounds.contains(x, y) && clickListener != null) {
clickListener
.onClick(DrawableClickListener.DrawablePosition.RIGHT);
event.setAction(MotionEvent.ACTION_CANCEL);
return false;
}
return super.onTouchEvent(event);
}
}
return super.onTouchEvent(event);
}
@Override
protected void finalize() throws Throwable {
drawableRight = null;
drawableBottom = null;
drawableLeft = null;
drawableTop = null;
super.finalize();
}
public void setDrawableClickListener(DrawableClickListener listener) {
this.clickListener = listener;
}
}
Also Create an Interface with
public interface DrawableClickListener {
public static enum DrawablePosition { TOP, BOTTOM, LEFT, RIGHT };
public void onClick(DrawablePosition target);
}
Still if u need any help, comment
Also set the drawableClickListener on the view in activity file.
editText.setDrawableClickListener(new DrawableClickListener() {
public void onClick(DrawablePosition target) {
switch (target) {
case LEFT:
//Do something here
break;
default:
break;
}
}
});
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