Android Open Source - Camera-Example Display Info Activity

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License

The source code is released under:

MIT License

Java Source Code

package edu.clemson.cameraexample;
/*from  w ww  .java  2 s. co  m*/
import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.Activity;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.view.MenuItem;
import android.webkit.WebView;

/**
 * 
 * @author jburton
 *
 * @class DisplayInfoActivity
 * 
 * @brief This class controls activities that displays the information page. 
 */

public class DisplayInfoActivity extends Activity {

  @SuppressLint("NewApi")
  @Override
  /**
   * @fn protected void onCreate(Bundle savedInstanceState)
   * @brief Method called when activity is created. 
   * This method sets the content view to activity_display_info, then creates an WebView view on which it displays the help information.
   * The help information is stored in an an HTML file in the assets directory. R.string.about_text gives the location of the file.
   * 
   * More on scrolling from   http://stackoverflow.com/questions/16623337/how-to-scroll-table-layout-in-horizontal-and-vertical-in-android 
   * 
   * @param savedInstanceState
   */
  
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_display_info);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            // Show the Up button in the action bar.
            getActionBar().setDisplayHomeAsUpEnabled(true);
        }

        // The about_text resource is the location of the HTML file.
        String message = getResources().getString(R.string.about_html_file);

        // Create the text view - html style.
        /// Webview information at http://stackoverflow.com/questions/3295381/android-html-resource-with-references-to-other-resources
        WebView webView = new WebView(this);
        
        webView.loadUrl(message);

        // Set the text view as the activity layout
        setContentView(webView);
  }

  /**
   * @fn private void setupActionBar()
   * 
   * Set up the android.app.ActionBar, if the API is available.
   * This enables the up/home button to allow users to return to the main screen.
   * 
   */
  @TargetApi(Build.VERSION_CODES.HONEYCOMB)
  private void setupActionBar() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
      getActionBar().setDisplayHomeAsUpEnabled(true);
    }
  }


  @Override
  /**
   * @fn onOptionsItemSelected(MenuItem item) 
   * This ID represents the Home or Up button. In the case of this
   * activity, the Up button is shown. Use NavUtils to allow users
   * to navigate up one level in the application structure. For
   * more details, see the Navigation pattern on Android Design:
   * 
   * http://developer.android.com/design/patterns/navigation.html#up-vs-back  
   * 
   * @param item The MenuItem
   * @return If Home or Up, navigate up and return true.
   * @return Otherwise, parent class functionality.
   */
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case android.R.id.home:

      NavUtils.navigateUpFromSameTask(this);
      return true;
    }
    return super.onOptionsItemSelected(item);
  }

}

Java Source Code List

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