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Added in API level 1

ZoomControls

public class ZoomControls
extends LinearLayout

java.lang.Object
    android.view.View
      android.view.ViewGroup
        android.widget.LinearLayout
          android.widget.ZoomControls


ZoomControls类显示一组简单的控件,用于缩放并提供回调来注册事件。

摘要(Summary)

Inherited XML attributes

From class android.widget.LinearLayout
From class android.view.ViewGroup
From class android.view.View

Inherited constants

From class android.widget.LinearLayout
From class android.view.ViewGroup
From class android.view.View

Inherited fields

From class android.view.View

Public constructors

ZoomControls(Context context)
ZoomControls(Context context, AttributeSet attrs)

公共方法(Public methods)

CharSequence getAccessibilityClassName()

返回此对象的类名称以用于辅助功能。

boolean hasFocus()

如果此视图具有或包含焦点,则返回true

void hide()
boolean onTouchEvent(MotionEvent event)

实现此方法来处理触摸屏幕动作事件。

void setIsZoomInEnabled(boolean isEnabled)
void setIsZoomOutEnabled(boolean isEnabled)
void setOnZoomInClickListener(View.OnClickListener listener)
void setOnZoomOutClickListener(View.OnClickListener listener)
void setZoomSpeed(long speed)
void show()

继承方法(Inherited methods)

From class android.widget.LinearLayout
From class android.view.ViewGroup
From class android.view.View
From class java.lang.Object
From interface android.view.ViewParent
From interface android.view.ViewManager
From interface android.graphics.drawable.Drawable.Callback
From interface android.view.KeyEvent.Callback
From interface android.view.accessibility.AccessibilityEventSource

Public constructors

ZoomControls

Added in API level 1
ZoomControls (Context context)

参数(Parameters)
context Context

ZoomControls

Added in API level 1
ZoomControls (Context context, 
                AttributeSet attrs)

参数(Parameters)
context Context
attrs AttributeSet

公共方法(Public methods)

getAccessibilityClassName

Added in API level 23
CharSequence getAccessibilityClassName ()

返回此对象的类名称以用于辅助功能。 如果子类正在实现的东西应该被视为一个全新的视图类,当它被可访问性使用时,子类只应该覆盖这个子类,与它所源自的类无关。 这用于填写AccessibilityNodeInfo.setClassName

返回(Returns)
CharSequence

hasFocus

Added in API level 1
boolean hasFocus ()

如果此视图具有或包含焦点,则返回true

返回(Returns)
boolean true if this view has or contains focus

hide

Added in API level 1
void hide ()

onTouchEvent

Added in API level 1
boolean onTouchEvent (MotionEvent event)

实现此方法来处理触摸屏幕动作事件。

如果此方法用于检测点击操作,建议通过执行并调用performClick()来执行操作。 这将确保一致的系统行为,包括:

  • obeying click sound preferences
  • dispatching OnClickListener calls
  • handling ACTION_CLICK when accessibility features are enabled

参数(Parameters)
event MotionEvent: The motion event.
返回(Returns)
boolean True if the event was handled, false otherwise.

setIsZoomInEnabled

Added in API level 1
void setIsZoomInEnabled (boolean isEnabled)

参数(Parameters)
isEnabled boolean

setIsZoomOutEnabled

Added in API level 1
void setIsZoomOutEnabled (boolean isEnabled)

参数(Parameters)
isEnabled boolean

setOnZoomInClickListener

Added in API level 1
void setOnZoomInClickListener (View.OnClickListener listener)

参数(Parameters)
listener View.OnClickListener

setOnZoomOutClickListener

Added in API level 1
void setOnZoomOutClickListener (View.OnClickListener listener)

参数(Parameters)
listener View.OnClickListener

setZoomSpeed

Added in API level 1
void setZoomSpeed (long speed)

参数(Parameters)
speed long

show

Added in API level 1
void show ()

Hooray!