Added in [version 37.2](https://developer.android.com/topic/libraries/support-library/revisions) Summary: [Nested Classes](https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery#nestedclasses) \| [Inherited Constants](https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery#inhconstants) \| [Fields](https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery#lfields) \| [Methods](https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery#pubmethods) \| [Inherited Methods](https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery#inhmethods)

# AppUsageDurationQuery

*** ** * ** ***


`
public

final

class
AppUsageDurationQuery
`


`

extends https://developer.android.com/reference/java/lang/Object


`

`


implements

https://developer.android.com/reference/android/os/Parcelable


`

|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||
| ↳ | android.app.usage.AppUsageDurationQuery |

<br />

*** ** * ** ***

Represents a query for application usage duration statistics. Used by `https://developer.android.com/reference/android/app/usage/UsageStatsManager#queryAppUsageDuration(android.app.usage.AppUsageDurationQuery)` call.

This class only supports queries for the past 30 days. Start times older than 30 days will
result in an empty list.

## Summary

| ### Nested classes ||
|---|---|
| ` class` | `https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery.Builder` Builder for `https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery`. |

### Inherited constants

From interface `https://developer.android.com/reference/android/os/Parcelable` `int` `https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR`

Descriptor bit used with `https://developer.android.com/reference/android/os/Parcelable#describeContents()`: indicates that
the Parcelable object's flattened representation includes a file descriptor.


`int` `https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE`

Flag for use with `https://developer.android.com/reference/android/os/Parcelable#writeToParcel(android.os.Parcel,%20int)`: the object being written
is a return value, that is the result of a function such as
"`Parcelable someFunction()`",
"`void someFunction(out Parcelable)`", or
"`void someFunction(inout Parcelable)`".


| ### Fields ||
|---|---|
| ` public static final https://developer.android.com/reference/android/os/Parcelable.Creator<https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery>` | `https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery#CREATOR` |

| ### Public methods ||
|---|---|
| ` int` | ` https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery#describeContents()() ` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. |
| ` boolean` | ` https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object o) ` Indicates whether some other object is "equal to" this one. |
| ` long` | ` https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery#getEndTimeMillis()() ` Returns the exclusive timestamp to indicate the end of the range of events. |
| ` int` | ` https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery#getIntervalType()() ` Returns the time interval by which the stats are aggregated. |
| ` long` | ` https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery#getStartTimeMillis()() ` Returns the inclusive timestamp to indicate the start of the range of events. |
| ` int` | ` https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery#hashCode()() ` Returns a hash code value for the object. |
| ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery#toString()() ` Returns a string representation of the object. |
| ` void` | ` https://developer.android.com/reference/android/app/usage/AppUsageDurationQuery#writeToParcel(android.os.Parcel,%20int)(https://developer.android.com/reference/android/os/Parcel dest, int flags) ` Flatten this object in to a Parcel. |

### Inherited methods

From class `

https://developer.android.com/reference/java/lang/Object

` `


https://developer.android.com/reference/java/lang/Object` `
https://developer.android.com/reference/java/lang/Object#clone()()
`

Creates and returns a copy of this object.


`


boolean` `
https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object obj)
`

Indicates whether some other object is "equal to" this one.


`


void` `
https://developer.android.com/reference/java/lang/Object#finalize()()
`

Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.


`


final

https://developer.android.com/reference/java/lang/Class<?>` `
https://developer.android.com/reference/java/lang/Object#getClass()()
`

Returns the runtime class of this `Object`.


`


int` `
https://developer.android.com/reference/java/lang/Object#hashCode()()
`

Returns a hash code value for the object.


`


final

void` `
https://developer.android.com/reference/java/lang/Object#notify()()
`

Wakes up a single thread that is waiting on this object's
monitor.


`


final

void` `
https://developer.android.com/reference/java/lang/Object#notifyAll()()
`

Wakes up all threads that are waiting on this object's monitor.


`


https://developer.android.com/reference/java/lang/String` `
https://developer.android.com/reference/java/lang/Object#toString()()
`

Returns a string representation of the object.


`


final

void` `
https://developer.android.com/reference/java/lang/Object#wait(long,%20int)(long timeoutMillis, int nanos)
`

Causes the current thread to wait until it is awakened, typically
by being *notified* or *interrupted*, or until a
certain amount of real time has elapsed.


`


final

void` `
https://developer.android.com/reference/java/lang/Object#wait(long)(long timeoutMillis)
`

Causes the current thread to wait until it is awakened, typically
by being *notified* or *interrupted*, or until a
certain amount of real time has elapsed.


`


final

void` `
https://developer.android.com/reference/java/lang/Object#wait()()
`

Causes the current thread to wait until it is awakened, typically
by being *notified* or *interrupted*.


From interface `

https://developer.android.com/reference/android/os/Parcelable

` `
abstract


int` `
https://developer.android.com/reference/android/os/Parcelable#describeContents()()
`

Describe the kinds of special objects contained in this Parcelable
instance's marshaled representation.


`
abstract


void` `
https://developer.android.com/reference/android/os/Parcelable#writeToParcel(android.os.Parcel,%20int)(https://developer.android.com/reference/android/os/Parcel dest, int flags)
`

Flatten this object in to a Parcel.


## Fields

### CREATOR

Added in [version 37.2](https://developer.android.com/topic/libraries/support-library/revisions)

```
public static final Creator<AppUsageDurationQuery> CREATOR
```

<br />

<br />

## Public methods

### describeContents

Added in [version 37.2](https://developer.android.com/topic/libraries/support-library/revisions)

```
public int describeContents ()
```

Describe the kinds of special objects contained in this Parcelable
instance's marshaled representation. For example, if the object will
include a file descriptor in the output of `https://developer.android.com/reference/android/os/Parcelable#writeToParcel(android.os.Parcel,%20int)`,
the return value of this method must include the
`https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR` bit.

<br />

| Returns ||
|---|---|
| `int` | a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either `0` or - `https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR` |

### equals

Added in [version 37.2](https://developer.android.com/topic/libraries/support-library/revisions)

```
public boolean equals (Object o)
```

Indicates whether some other object is "equal to" this one.


The `equals` method implements an equivalence relation
on non-null object references:

- It is *reflexive*: for any non-null reference value `x`, `x.equals(x)` should return `true`.
- It is *symmetric*: for any non-null reference values `x` and `y`, `x.equals(y)` should return `true` if and only if `y.equals(x)` returns `true`.
- It is *transitive*: for any non-null reference values `x`, `y`, and `z`, if `x.equals(y)` returns `true` and `y.equals(z)` returns `true`, then `x.equals(z)` should return `true`.
- It is *consistent*: for any non-null reference values `x` and `y`, multiple invocations of `x.equals(y)` consistently return `true` or consistently return `false`, provided no information used in `equals` comparisons on the objects is modified.
- For any non-null reference value `x`, `x.equals(null)` should return `false`.


An equivalence relation partitions the elements it operates on
into *equivalence classes*; all the members of an
equivalence class are equal to each other. Members of an
equivalence class are substitutable for each other, at least
for some purposes.

<br />

| Parameters ||
|---|---|
| `o` | `Object`: This value may be `null`. <br /> |

| Returns ||
|---|---|
| `boolean` | `true` if this object is the same as the obj argument; `false` otherwise. <br /> |

### getEndTimeMillis

Added in [version 37.2](https://developer.android.com/topic/libraries/support-library/revisions)

```
public long getEndTimeMillis ()
```

Returns the exclusive timestamp to indicate the end of the range of events. Defined in terms
of "Unix time", see `https://developer.android.com/reference/java/lang/System#currentTimeMillis()`.


Value is a non-negative timestamp measured as the number of
milliseconds since 1970-01-01T00:00:00Z.

<br />

| Returns ||
|---|---|
| `long` | Value is a non-negative timestamp measured as the number of milliseconds since 1970-01-01T00:00:00Z. <br /> |

### getIntervalType

Added in [version 37.2](https://developer.android.com/topic/libraries/support-library/revisions)

```
public int getIntervalType ()
```

Returns the time interval by which the stats are aggregated.

<br />

| Returns ||
|---|---|
| `int` | Value is one of the following: - `https://developer.android.com/reference/android/app/usage/UsageStatsManager#INTERVAL_DAILY` - `https://developer.android.com/reference/android/app/usage/UsageStatsManager#INTERVAL_WEEKLY` - `https://developer.android.com/reference/android/app/usage/UsageStatsManager#INTERVAL_MONTHLY` - `https://developer.android.com/reference/android/app/usage/UsageStatsManager#INTERVAL_YEARLY` |

### getStartTimeMillis

Added in [version 37.2](https://developer.android.com/topic/libraries/support-library/revisions)

```
public long getStartTimeMillis ()
```

Returns the inclusive timestamp to indicate the start of the range of events. Defined in
terms of "Unix time", see `https://developer.android.com/reference/java/lang/System#currentTimeMillis()`.


Value is a non-negative timestamp measured as the number of
milliseconds since 1970-01-01T00:00:00Z.

<br />

| Returns ||
|---|---|
| `long` | Value is a non-negative timestamp measured as the number of milliseconds since 1970-01-01T00:00:00Z. <br /> |

### hashCode

Added in [version 37.2](https://developer.android.com/topic/libraries/support-library/revisions)

```
public int hashCode ()
```

Returns a hash code value for the object. This method is
supported for the benefit of hash tables such as those provided by
`https://developer.android.com/reference/java/util/HashMap`.


The general contract of `hashCode` is:

- Whenever it is invoked on the same object more than once during an execution of a Java application, the `hashCode` method must consistently return the same integer, provided no information used in `equals` comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
- If two objects are equal according to the `https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)` method, then calling the `hashCode` method on each of the two objects must produce the same integer result.
- It is *not* required that if two objects are unequal according to the `https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)` method, then calling the `hashCode` method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

<br />

<br />

| Returns ||
|---|---|
| `int` | a hash code value for this object. <br /> |

### toString

Added in [version 37.2](https://developer.android.com/topic/libraries/support-library/revisions)

```
public String toString ()
```

Returns a string representation of the object.

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/java/lang/String` | a string representation of the object. <br /> |

### writeToParcel

Added in [version 37.2](https://developer.android.com/topic/libraries/support-library/revisions)

```
public void writeToParcel (Parcel dest, 
                int flags)
```

Flatten this object in to a Parcel.

<br />

| Parameters ||
|---|---|
| `dest` | `Parcel`: This value cannot be `null`. <br /> |
| `flags` | `int`: Additional flags about how the object should be written. May be 0 or `https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE`. Value is either `0` or a combination of the following: - `https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE` |