Android Open Source - InMemoryDb U I Handler

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License

The source code is released under:

Apache License

Java Source Code

package org.gawst.asyncdb.adapter;
//  w ww. j  av a  2  s.com
import android.os.Handler;
import android.os.Looper;

/**
 * A {@link android.os.Handler Handler} that runs the code in the UI thread
 */
public class UIHandler extends Handler {

  public UIHandler() {
    super(Looper.getMainLooper());
  }

  /**
   * Run the {@code Runnable} in the UI thread
   * @param r The Runnable that will be executed.
   */
  public void runOnUiThread(Runnable r) {
    if (isUIThread())
      r.run();
    else
      post(r);
  }

  /**
   * Indicates the current thread is the UI thread
   * @return {@code true} if the current Thread is the UI thread
   */
  public static boolean isUIThread() {
    return Thread.currentThread()==Looper.getMainLooper().getThread();
  }

  /**
   * Assert that we are running in the UI thread
   */
  public static void assertUIThread() throws IllegalThreadStateException {
    if (!isUIThread())
      throw new IllegalThreadStateException();
  }

  /**
   * Assert that we are NOT running in the UI thread
   */
  public static void assertNotUIThread() throws IllegalThreadStateException {
    if (isUIThread())
      throw new IllegalThreadStateException();
  }
}

Java Source Code List

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