Android Open Source - androidui Alert Dialog Activity

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License

The source code is released under:
MIT License
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Java Source Code

package course.examples.UI.AlertDialog;
/*from   ww  w.j a  va  2s  . co m*/
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class AlertDialogActivity extends Activity {

  // Identifier for each type of Dialog
  private static final int ALERTTAG = 0, PROGRESSTAG = 1;

  private static final String TAG = "AlertDialogActivity";
  private Button mShutdownButton = null;
  private DialogFragment mDialog;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    // ShutDown Button
    mShutdownButton = (Button) findViewById(R.id.shutdownButton);
    mShutdownButton.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        showDialogFragment(ALERTTAG);
      }
    });
  }

  // Show desired Dialog
  void showDialogFragment(int dialogID) {

    switch (dialogID) {

    // Show AlertDialog
    case ALERTTAG:

      // Create a new AlertDialogFragment
      mDialog = AlertDialogFragment.newInstance();

      // Show AlertDialogFragment
      mDialog.show(getFragmentManager(), "Alert");

      break;

    // Show ProgressDialog
    case PROGRESSTAG:

      // Create a new ProgressDialogFragment
      mDialog = ProgressDialogFragment.newInstance();

      // Show new ProgressDialogFragment
      mDialog.show(getFragmentManager(), "Shutdown");
      break;
    }
  }

  // Abort or complete ShutDown based on value of shouldContinue
  private void continueShutdown(boolean shouldContinue) {
    if (shouldContinue) {

      // Prevent further interaction with the ShutDown Button
      mShutdownButton.setEnabled(false);
      
      // Show ProgressDialog as shutdown process begins 
      showDialogFragment(PROGRESSTAG);
      
      // Finish the ShutDown process
      finishShutdown();
    
    } else {

      // Abort ShutDown and dismiss dialog
      mDialog.dismiss();
    }
  }

  private void finishShutdown() {
    new Thread(new Runnable() {
      @Override
      public void run() {
        try {
          // Pretend to do something before
          // shutting down
          Thread.sleep(5000);
        } catch (InterruptedException e) {
          Log.i(TAG, e.toString());
        } finally {
          finish();
        }
      }
    }).start();
  }

  // Class that creates the AlertDialog
  public static class AlertDialogFragment extends DialogFragment {

    public static AlertDialogFragment newInstance() {
      return new AlertDialogFragment();
    }

    // Build AlertDialog using AlertDialog.Builder
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
      return new AlertDialog.Builder(getActivity())
          .setMessage(getString(R.string.exit_confirm_string))
          
          // User cannot dismiss dialog by hitting back button
          .setCancelable(false)
          
          // Set up No Button
          .setNegativeButton("No",
              new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog,
                    int id) {
                  ((AlertDialogActivity) getActivity())
                      .continueShutdown(false);
                }
              })
              
          // Set up Yes Button
          .setPositiveButton("Yes",
                            new DialogInterface.OnClickListener() {
                                public void onClick(
                                        final DialogInterface dialog, int id) {
                                    ((AlertDialogActivity) getActivity())
                                            .continueShutdown(true);
                                }
                            }).create();
    }
  }

  // Class that creates the ProgressDialog
  public static class ProgressDialogFragment extends DialogFragment {

    public static ProgressDialogFragment newInstance() {
      return new ProgressDialogFragment();
    }

    // Build ProgressDialog
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {

      //Create new ProgressDialog
      final ProgressDialog dialog = new ProgressDialog(getActivity());
      
      // Set Dialog message
      dialog.setMessage("Activity Shutting Down.");
      
      // Dialog will be displayed for an unknown amount of time
      dialog.setIndeterminate(true);

      return dialog;
    }
  }
}
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