Android Open Source - M3UPlayer Interlude

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License

The source code is released under:

Apache License

Java Source Code

package com.iptv.utils;
/*w  w w . j a  v a 2  s.  com*/
import android.app.ProgressDialog;
import android.content.Context;
import android.os.AsyncTask;

import com.iptv.player.R;

public class Interlude {
  public static interface Callback {
    public void onCompleted();
  }

  public static abstract class Task {
    public static interface Callback {
      public void onProgreeUpdate(int current, int total);
    }

    private final boolean mSupportProgress;
    protected Callback mCallback = null;

    public Task(boolean supportProgress) {
      mSupportProgress = supportProgress;
    }

    public void setCallback(Callback callback) {
      mCallback = callback;
    }

    public boolean isSupportProgress() {
      return mSupportProgress;
    }

    public abstract void execute();
  }

  private final Context mContext;
  private final Task mTask;
  private Callback mCallback;
  
  public void setCallback(Callback callback) {
    mCallback = callback;
  }

  private final AsyncTask<Void, Integer, Void> buildTask() {
    return new AsyncTask<Void, Integer, Void>() {
      final private Task.Callback cb = new Task.Callback() {

        @Override
        public void onProgreeUpdate(int current, int total) {
          publishProgress(current, total);
        }
      };
      private ProgressDialog mDialog = null;

      @Override
      protected void onPreExecute() {
        if (mContext != null) {
          mDialog = new ProgressDialog(mContext);
          mDialog.setMessage(mContext
              .getString(R.string.tips_loading));
          mDialog.setIndeterminate(false);
          if (mTask.isSupportProgress()) {
            mTask.setCallback(cb);
            mDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
            mDialog.setMax(100);
            mDialog.setProgress(0);
          } else {
            mDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
          }
          mDialog.setCancelable(false);
          mDialog.show();
        }
        super.onPreExecute();
      }

      @Override
      protected Void doInBackground(Void... params) {
        mTask.execute();
        return null;
      }

      @Override
      protected void onPostExecute(Void result) {
        if (mCallback != null) {
          mCallback.onCompleted();
        }
        if (mDialog != null && mDialog.isShowing()) {
          mDialog.dismiss();
        }
        super.onPostExecute(result);
      }

      @Override
      protected void onProgressUpdate(Integer... values) {
        if (mDialog != null && mDialog.isShowing() && values != null
            && values.length == 2) {
          mDialog.setMax(values[1]);
          mDialog.setProgress(values[0]);
        }
        super.onProgressUpdate(values);
      }
    };
  }

  /**
   * Interlude UI, none-UI task can be executed with it.
   * 
   * @param ctx
   *            the instance of Context, usually it should be an Activity.
   * @param task
   *            the instance of Task, it cannot be a null pointer.
   */
  public Interlude(Context ctx, Task task) {
    if (task == null) {
      throw new IllegalArgumentException("Task cannot be a null pointer.");
    }
    mContext = ctx;
    mTask = task;
  }

  public void excute() {
    buildTask().execute();
  }
}

Java Source Code List

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