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Added in API level 21

UsageEvents

public final class UsageEvents
extends Object implements Parcelable

java.lang.Object
   ↳ android.app.usage.UsageEvents


queryEvents(long, long)返回的结果可以从中读取 UsageEvents.Event对象。

Summary

Nested classes

class UsageEvents.Event

表示组件状态更改的事件。

Inherited constants

From interface android.os.Parcelable

Fields

public static final Creator<UsageEvents> CREATOR

Public methods

int describeContents()

描述此Parcelable实例的封送表示中包含的特殊对象的种类。

boolean getNextEvent(UsageEvents.Event eventOut)

从集合中检索下一个 UsageEvents.Event ,并将结果数据放入 eventOut

boolean hasNextEvent()

返回是否有更多要使用 getNextEvent(android.app.usage.UsageEvents.Event)读取的事件。

void writeToParcel(Parcel dest, int flags)

将此对象平铺到一个包裹中。

Inherited methods

From class java.lang.Object
From interface android.os.Parcelable

Fields

CREATOR

Added in API level 21
Creator<UsageEvents> CREATOR

Public methods

describeContents

Added in API level 21
int describeContents ()

描述此Parcelable实例的封送表示中包含的特殊对象的种类。 例如,如果对象在writeToParcel(Parcel, int)的输出中包含writeToParcel(Parcel, int) ,则此方法的返回值必须包含CONTENTS_FILE_DESCRIPTOR位。

Returns
int a bitmask indicating the set of special object types marshaled by this Parcelable object instance.

getNextEvent

Added in API level 21
boolean getNextEvent (UsageEvents.Event eventOut)

从集合中检索下一个 UsageEvents.Event ,并将结果数据放入 eventOut

Parameters
eventOut UsageEvents.Event: The UsageEvents.Event object that will receive the next event data.
Returns
boolean true if an event was available, false if there are no more events.

hasNextEvent

Added in API level 21
boolean hasNextEvent ()

返回是否有更多要使用 getNextEvent(android.app.usage.UsageEvents.Event)读取的事件。

Returns
boolean true if there are more events, false otherwise.

writeToParcel

Added in API level 21
void writeToParcel (Parcel dest, 
                int flags)

将此对象平铺到一个包裹中。

Parameters
dest Parcel: The Parcel in which the object should be written.
flags int: Additional flags about how the object should be written. May be 0 or PARCELABLE_WRITE_RETURN_VALUE.

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