/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.view;
import com.android.internal.R;
import com.android.internal.view.menu.MenuBuilder;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Interpolator;
import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.Point;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.Region;
import android.graphics.Shader;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.RemoteException;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.util.AttributeSet;
import android.util.Config;
import android.util.EventLog;
import android.util.Log;
import android.util.Pool;
import android.util.Poolable;
import android.util.PoolableManager;
import android.util.Pools;
import android.util.SparseArray;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityEventSource;
import android.view.accessibility.AccessibilityManager;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputMethodManager;
import android.widget.ScrollBarDrawable;
import java.lang.ref.SoftReference;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.WeakHashMap;
/**
* <p>
* This class represents the basic building block for user interface components. A View
* occupies a rectangular area on the screen and is responsible for drawing and
* event handling. View is the base class for <em>widgets</em>, which are
* used to create interactive UI components (buttons, text fields, etc.). The
* {@link android.view.ViewGroup} subclass is the base class for <em>layouts</em>, which
* are invisible containers that hold other Views (or other ViewGroups) and define
* their layout properties.
* </p>
*
* <div class="special">
* <p>For an introduction to using this class to develop your
* application's user interface, read the Developer Guide documentation on
* <strong><a href="{@docRoot}guide/topics/ui/index.html">User Interface</a></strong>. Special topics
* include:
* <br/><a href="{@docRoot}guide/topics/ui/declaring-layout.html">Declaring Layout</a>
* <br/><a href="{@docRoot}guide/topics/ui/menus.html">Creating Menus</a>
* <br/><a href="{@docRoot}guide/topics/ui/layout-objects.html">Common Layout Objects</a>
* <br/><a href="{@docRoot}guide/topics/ui/binding.html">Binding to Data with AdapterView</a>
* <br/><a href="{@docRoot}guide/topics/ui/ui-events.html">Handling UI Events</a>
* <br/><a href="{@docRoot}guide/topics/ui/themes.html">Applying Styles and Themes</a>
* <br/><a href="{@docRoot}guide/topics/ui/custom-components.html">Building Custom Components</a>
* <br/><a href="{@docRoot}guide/topics/ui/how-android-draws.html">How Android Draws Views</a>.
* </p>
* </div>
*
* <a name="Using"></a>
* <h3>Using Views</h3>
* <p>
* All of the views in a window are arranged in a single tree. You can add views
* either from code or by specifying a tree of views in one or more XML layout
* files. There are many specialized subclasses of views that act as controls or
* are capable of displaying text, images, or other content.
* </p>
* <p>
* Once you have created a tree of views, there are typically a few types of
* common operations you may wish to perform:
* <ul>
* <li><strong>Set properties:</strong> for example setting the text of a
* {@link android.widget.TextView}. The available properties and the methods
* that set them will vary among the different subclasses of views. Note that
* properties that are known at build time can be set in the XML layout
* files.</li>
* <li><strong>Set focus:</strong> The framework will handled moving focus in
* response to user input. To force focus to a specific view, call
* {@link #requestFocus}.</li>
* <li><strong>Set up listeners:</strong> Views allow clients to set listeners
* that will be notified when something interesting happens to the view. For
* example, all views will let you set a listener to be notified when the view
* gains or loses focus. You can register such a listener using
* {@link #setOnFocusChangeListener}. Other view subclasses offer more
* specialized listeners. For example, a Button exposes a listener to notify
* clients when the button is clicked.</li>
* <li><strong>Set visibility:</strong> You can hide or show views using
* {@link #setVisibility}.</li>
* </ul>
* </p>
* <p><em>
* Note: The Android framework is responsible for measuring, laying out and
* drawing views. You should not call methods that perform these actions on
* views yourself unless you are actually implementing a
* {@link android.view.ViewGroup}.
* </em></p>
*
* <a name="Lifecycle"></a>
* <h3>Implementing a Custom View</h3>
*
* <p>
* To implement a custom view, you will usually begin by providing overrides for
* some of the standard methods that the framework calls on all views. You do
* not need to override all of these methods. In fact, you can start by just
* overriding {@link #onDraw(android.graphics.Canvas)}.
* <table border="2" width="85%" align="center" cellpadding="5">
* <thead>
* <tr><th>Category</th> <th>Methods</th> <th>Description</th></tr>
* </thead>
*
* <tbody>
* <tr>
* <td rowspan="2">Creation</td>
* <td>Constructors</td>
* <td>There is a form of the constructor that are called when the view
* is created from code and a form that is called when the view is
* inflated from a layout file. The second form should parse and apply
* any attributes defined in the layout file.
* </td>
* </tr>
* <tr>
* <td><code>{@link #onFinishInflate()}</code></td>
* <td>Called after a view and all of its children has been inflated
* from XML.</td>
* </tr>
*
* <tr>
* <td rowspan="3">Layout</td>
* <td><code>{@link #onMeasure}</code></td>
* <td>Called to determine the size requirements for this view and all
* of its children.
* </td>
* </tr>
* <tr>
* <td><code>{@link #onLayout}</code></td>
* <td>Called when this view should assign a size and position to all
* of its children.
* </td>
* </tr>
* <tr>
* <td><code>{@link #onSizeChanged}</code></td>
* <td>Called when the size of this view has changed.
* </td>
* </tr>
*
* <tr>
* <td>Drawing</td>
* <td><code>{@link #onDraw}</code></td>
* <td>Called when the view should render its content.
* </td>
* </tr>
*
* <tr>
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android2.2 java源码
共2149个文件
java:2149个
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android2.2 java源码 (2149个子文件)
View.java 329KB
TextView.java 255KB
ContactsContract.java 217KB
Intent.java 217KB
Activity.java 156KB
AbsListView.java 146KB
Settings.java 135KB
ListView.java 134KB
ViewGroup.java 132KB
DatabaseMetaData.java 127KB
BigDecimal.java 120KB
Character.java 109KB
ObjectInputStream.java 107KB
Collections.java 107KB
Formatter.java 97KB
SQLiteDatabase.java 90KB
AbstractQueuedSynchronizer.java 89KB
Contacts.java 89KB
PackageManager.java 88KB
InputMethodService.java 86KB
TreeMap.java 84KB
String.java 83KB
Context.java 82KB
Scanner.java 82KB
AccountManager.java 81KB
Arrays.java 80KB
Resources.java 79KB
ObjectOutputStream.java 75KB
ThreadPoolExecutor.java 73KB
MediaStore.java 71KB
PhoneNumberUtils.java 70KB
Camera.java 70KB
ResultSet.java 70KB
Uri.java 69KB
DateUtils.java 68KB
Parcel.java 67KB
GridView.java 66KB
GLSurfaceView.java 64KB
Layout.java 64KB
GLES20.java 63KB
MediaPlayer.java 63KB
ViewDebug.java 62KB
Class.java 61KB
SensorManager.java 61KB
AutoCompleteTextView.java 61KB
URI.java 59KB
LinearLayout.java 57KB
ContentResolver.java 57KB
TextToSpeech.java 56KB
RelativeLayout.java 56KB
KeyboardView.java 56KB
Instrumentation.java 56KB
AudioManager.java 56KB
Cipher.java 56KB
Preference.java 56KB
KeyStore.java 55KB
ReentrantReadWriteLock.java 55KB
IntentFilter.java 54KB
CallableStatement.java 53KB
LocationManager.java 53KB
SimpleDateFormat.java 53KB
InputMethodManager.java 53KB
BigInteger.java 52KB
Thread.java 52KB
DecimalFormat.java 52KB
MessageFormat.java 51KB
TextUtils.java 51KB
GregorianCalendar.java 51KB
X509CertSelector.java 50KB
WindowManager.java 49KB
Logger.java 49KB
PopupWindow.java 49KB
DatatypeFactory.java 48KB
Calendar.java 48KB
File.java 48KB
ScrollView.java 47KB
StaticLayout.java 47KB
Bundle.java 47KB
MotionEvent.java 47KB
ConcurrentHashMap.java 47KB
HorizontalScrollView.java 47KB
WebSettings.java 46KB
CopyOnWriteArrayList.java 46KB
ExpandableListView.java 45KB
KeyEvent.java 44KB
Socket.java 44KB
URLClassLoader.java 44KB
InetAddress.java 44KB
XmlPullParser.java 44KB
GLES10.java 44KB
WifiManager.java 43KB
Gallery.java 43KB
Document.java 43KB
Provider.java 43KB
DefaultRequestDirector.java 42KB
SynchronousQueue.java 42KB
SimpleTimeZone.java 42KB
Debug.java 42KB
WebViewDatabase.java 42KB
Canvas.java 42KB
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