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AttributeSet | A collection of attributes, as found associated with a tag in an XML document. |
Printer | Simple interface for printing text, allowing redirection to various targets. |
ArrayMap<K, V> |
ArrayMap is a generic key->value mapping data structure that is
designed to be more memory efficient than a traditional HashMap .
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ArraySet<E> |
ArraySet is a generic set data structure that is designed to be more memory efficient than a
traditional HashSet .
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AtomicFile | Helper class for performing atomic operations on a file by writing to a new file and renaming it into the place of the original file after the write has successfully completed. |
Base64 | Utilities for encoding and decoding the Base64 representation of binary data. |
Base64InputStream | An InputStream that does Base64 decoding on the data read through it. |
Base64OutputStream | An OutputStream that does Base64 encoding on the data written to it, writing the resulting data to another OutputStream. |
CloseGuard | CloseGuard is a mechanism for flagging implicit finalizer cleanup of resources that should have been cleaned up by explicit close methods (aka "explicit termination methods" in Effective Java). |
Config | This class is deprecated. This class is not useful, it just returns the same value for all constants, and has always done this. Do not use it. |
DebugUtils |
Various utilities for debugging and logging. |
DisplayMetrics | A structure describing general information about a display, such as its size, density, and font scaling. |
EventLog | Access to the system diagnostic event record. |
EventLog.Event | A previously logged event read from the logs. |
EventLogTags |
This class is deprecated.
This class is no longer functional.
Use EventLog instead.
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EventLogTags.Description | |
FloatMath |
This class is deprecated.
Use Math instead.
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FloatProperty<T> |
An implementation of Property to be used specifically with fields of type
float .
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Half |
The |
IntProperty<T> |
An implementation of Property to be used specifically with fields of type
int .
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JsonReader | Reads a JSON (RFC 4627) encoded value as a stream of tokens. |
JsonWriter | Writes a JSON (RFC 4627) encoded value to a stream, one token at a time. |
LayoutDirection | A class for defining layout directions. |
Log | API for sending log output. |
LogPrinter |
Implementation of a Printer that sends its output
to the system log.
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LongSparseArray<E> | SparseArray mapping longs to Objects. |
LruCache<K, V> | A cache that holds strong references to a limited number of values. |
MonthDisplayHelper | Helps answer common questions that come up when displaying a month in a 6 row calendar grid format. |
MutableBoolean | This class is deprecated. This class will be removed from a future version of the Android API. |
MutableByte | This class is deprecated. This class will be removed from a future version of the Android API. |
MutableChar | This class is deprecated. This class will be removed from a future version of the Android API. |
MutableDouble | This class is deprecated. This class will be removed from a future version of the Android API. |
MutableFloat | This class is deprecated. This class will be removed from a future version of the Android API. |
MutableInt | This class is deprecated. This class will be removed from a future version of the Android API. |
MutableLong | This class is deprecated. This class will be removed from a future version of the Android API. |
MutableShort | This class is deprecated. This class will be removed from a future version of the Android API. |
Pair<F, S> | Container to ease passing around a tuple of two objects. |
Patterns | Commonly used regular expression patterns. |
PrintStreamPrinter |
Implementation of a Printer that sends its output
to a PrintStream .
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PrintWriterPrinter |
Implementation of a Printer that sends its output
to a PrintWriter .
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Property<T, V> |
A property is an abstraction that can be used to represent a |
Range<T extends Comparable<? super T>> | Immutable class for describing the range of two numeric values. |
Rational |
An immutable data type representation a rational number. |
Size | Immutable class for describing width and height dimensions in pixels. |
SizeF | Immutable class for describing width and height dimensions in some arbitrary unit. |
SparseArray<E> |
SparseArray maps integers to Objects and, unlike a normal array of Objects,
its indices can contain gaps.
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SparseBooleanArray | SparseBooleanArrays map integers to booleans. |
SparseIntArray | SparseIntArrays map integers to integers. |
SparseLongArray | SparseLongArrays map integers to longs. |
StateSet |
State sets are arrays of positive ints where each element
represents the state of a View (e.g.
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StatsLog | StatsLog provides an API for developers to send events to statsd. |
StringBuilderPrinter |
Implementation of a Printer that sends its output
to a StringBuilder .
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TimeUtils | A class containing utility methods related to time zones. |
TimingLogger |
This class is deprecated.
Use Trace , or
Android Studio. In
general, milliseconds is the wrong granularity for method-level tracing. Rounding errors
can overemphasize cheap operations, or underemphasize repeated operations. This timing
system also does not take CPU scheduling or frequency into account.
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TypedValue | Container for a dynamically typed data value. |
Xml | XML utility methods. |
JsonToken | A structure, name or value type in a JSON-encoded string. |
Xml.Encoding | Supported character encodings. |
AndroidException | Base class for all checked exceptions thrown by the Android frameworks. |
AndroidRuntimeException | Base class for all unchecked exceptions thrown by the Android frameworks. |
Base64DataException |
This exception is thrown by Base64InputStream or Base64OutputStream
when an error is detected in the data being decoded.
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MalformedJsonException | Thrown when a reader encounters malformed JSON. |
NoSuchPropertyException |
Thrown when code requests a Property on a class that does
not expose the appropriate method or field.
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TimeFormatException |