Example usage for android.support.v4.util Preconditions checkNotNull

Introduction

In this page you can find the example usage for android.support.v4.util Preconditions checkNotNull.

Prototype

public static @NonNull <T> T checkNotNull(final T reference, final Object errorMessage) 

Source Link

Document

Ensures that an object reference passed as a parameter to the calling method is not null.

Usage

From source file:android.support.text.emoji.widget.EmojiTextViewHelper.java

/**
 * Default constructor./*from  www .  java  2 s.c om*/
 *
 * @param textView TextView instance
 */
public EmojiTextViewHelper(@NonNull TextView textView) {
    Preconditions.checkNotNull(textView, "textView cannot be null");
    mHelper = Build.VERSION.SDK_INT >= 19 ? new HelperInternal19(textView) : new HelperInternal();
}

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From source file:android.support.text.emoji.EmojiSpan.java

/**
 * Default constructor./*from   w w w.j a  v a 2 s. c  o  m*/
 *
 * @param metadata information about the emoji, cannot be {@code null}
 *
 * @hide
 */
@RestrictTo(LIBRARY_GROUP)
EmojiSpan(@NonNull final EmojiMetadata metadata) {
    Preconditions.checkNotNull(metadata, "metadata cannot be null");
    mMetadata = metadata;
}

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From source file:android.support.text.emoji.widget.SpannableBuilder.java

/**
 * @hide//from  w w  w  .j av a2  s .  co  m
 */
@RestrictTo(LIBRARY_GROUP)
SpannableBuilder(@NonNull Class<?> watcherClass) {
    Preconditions.checkNotNull(watcherClass, "watcherClass cannot be null");
    mWatcherClass = watcherClass;
}

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From source file:android.support.text.emoji.widget.SpannableBuilder.java

/**
 * @hide/*from   ww w  .  jav a 2s.c  om*/
 */
@RestrictTo(LIBRARY_GROUP)
SpannableBuilder(@NonNull Class<?> watcherClass, @NonNull CharSequence text) {
    super(text);
    Preconditions.checkNotNull(watcherClass, "watcherClass cannot be null");
    mWatcherClass = watcherClass;
}

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From source file:android.support.text.emoji.widget.EmojiEditTextHelper.java

/**
 * Default constructor./*from  ww w . j ava2s  .c  o  m*/
 *
 * @param editText EditText instance
 */
public EmojiEditTextHelper(@NonNull final EditText editText) {
    Preconditions.checkNotNull(editText, "editText cannot be null");
    mHelper = Build.VERSION.SDK_INT >= 19 ? new HelperInternal19(editText) : new HelperInternal();
}

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From source file:android.support.text.emoji.widget.SpannableBuilder.java

/**
 * @hide//from w  ww. ja  va  2s . c  o m
 */
@RestrictTo(LIBRARY_GROUP)
SpannableBuilder(@NonNull Class<?> watcherClass, @NonNull CharSequence text, int start, int end) {
    super(text, start, end);
    Preconditions.checkNotNull(watcherClass, "watcherClass cannot be null");
    mWatcherClass = watcherClass;
}

---

From source file:android.support.text.emoji.widget.EmojiEditTextHelper.java

/**
 * Attaches EmojiCompat KeyListener to the widget. Should be called from {@link
 * TextView#setKeyListener(KeyListener)}. Existing keyListener is wrapped into EmojiCompat
 * KeyListener. When used on devices running API 18 or below, this method returns
 * {@code keyListener} that is given as a parameter.
 *
 * @param keyListener KeyListener passed into {@link TextView#setKeyListener(KeyListener)}
 *
 * @return a new KeyListener instance that wraps {@code keyListener}.
 */// w ww  .j a v  a  2  s . c  om
@NonNull
public KeyListener getKeyListener(@NonNull final KeyListener keyListener) {
    Preconditions.checkNotNull(keyListener, "keyListener cannot be null");
    return mHelper.getKeyListener(keyListener);
}

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From source file:android.support.text.emoji.MetadataRepo.java

/**
 * Add an EmojiMetadata to the index.//from  w w  w . j  a v a2  s  .  c  om
 *
 * @hide
 */
@RestrictTo(LIBRARY_GROUP)
@VisibleForTesting
void put(@NonNull final EmojiMetadata data) {
    Preconditions.checkNotNull(data, "emoji metadata cannot be null");
    Preconditions.checkArgument(data.getCodepointsLength() > 0, "invalid metadata codepoint length");

    mRootNode.put(data, 0, data.getCodepointsLength() - 1);
}

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From source file:android.support.text.emoji.EmojiCompat.java

/**
 * Registers an initialization callback. If the initialization is already completed by the time
 * the listener is added, the callback functions are called immediately. Callbacks are called on
 * the main looper.//from www  . jav a2s. co  m
 * <p/>
 * When used on devices running API 18 or below, {@link InitCallback#onInitialized()} is called
 * without loading any metadata. In such cases {@link InitCallback#onFailed(Throwable)} is never
 * called.
 *
 * @param initCallback the initialization callback to register, cannot be {@code null}
 *
 * @see #unregisterInitCallback(InitCallback)
 */
public void registerInitCallback(@NonNull InitCallback initCallback) {
    Preconditions.checkNotNull(initCallback, "initCallback cannot be null");

    mInitLock.writeLock().lock();
    try {
        if (mLoadState == LOAD_STATE_SUCCEEDED || mLoadState == LOAD_STATE_FAILED) {
            mMainHandler.post(new ListenerDispatcher(initCallback, mLoadState));
        } else {
            mInitCallbacks.add(initCallback);
        }
    } finally {
        mInitLock.writeLock().unlock();
    }
}

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From source file:android.support.text.emoji.EmojiCompat.java

/**
 * Unregisters a callback that was added before.
 *
 * @param initCallback the callback to be removed, cannot be {@code null}
 *//*from   w w w.  j a va 2 s. c  o  m*/
public void unregisterInitCallback(@NonNull InitCallback initCallback) {
    Preconditions.checkNotNull(initCallback, "initCallback cannot be null");
    mInitLock.writeLock().lock();
    try {
        mInitCallbacks.remove(initCallback);
    } finally {
        mInitLock.writeLock().unlock();
    }
}

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