Java source code

package com.puravidaapps;import android.content.Context;import android.graphics.Bitmap;import android.util.Log;import android.view.View;import android.app.Activity;import android.os.Environment;import com.google.appinventor.components.annotations.DesignerComponent;import com.google.appinventor.components.annotations.DesignerProperty;import com.google.appinventor.components.annotations.PropertyCategory;import com.google.appinventor.components.annotations.SimpleEvent;import com.google.appinventor.components.annotations.SimpleFunction;import com.google.appinventor.components.annotations.SimpleObject;import com.google.appinventor.components.annotations.SimpleProperty;import com.google.appinventor.components.annotations.UsesPermissions;import com.google.appinventor.components.common.ComponentCategory;import com.google.appinventor.components.common.PropertyTypeConstants;import com.google.appinventor.components.runtime.*;import java.io.File;import java.io.FileOutputStream;@DesignerComponent(version = TaifunScreenshot.VERSION,    description = "Extension to take a screenshot.",    category = ComponentCategory.EXTENSION,    nonVisible = true,    iconName = "https://puravidaapps.com/images/taifun16.png")@SimpleObject(external = true)@UsesPermissions(permissionNames = "android.permission.WRITE_EXTERNAL_STORAGE")public class TaifunScreenshot extends AndroidNonvisibleComponent implements Component {  public static final int VERSION = 1;  private ComponentContainer container;  private Context context;  private final Activity activity;  private String fileName;  private static final String LOG_TAG = "TaifunScreenshot";  public TaifunScreenshot(ComponentContainer container) {    super(container.$form());    this.container = container;    context = (Context) container.$context();    activity = (Activity) container.$context();    fileName = "screenshot.jpg";    Log.d(LOG_TAG, "TaifunScreenshot Created" );  }  /**   * Return fileName   */  @SimpleProperty(category = PropertyCategory.BEHAVIOR,      description = "filename of the screenshot to be taken")  public String FileName() {    return fileName;  }  /**   * Set fileName   */  @DesignerProperty(editorType = PropertyTypeConstants.PROPERTY_TYPE_STRING,      defaultValue = "screenshot.jpg")  @SimpleProperty  public void FileName(String fileName) {    this.fileName = fileName;  }  /**   * Take a screenshot   */  @SimpleFunction(description = "Take a screenshot.")  public void TakeScreenshot() {    // "http://stackoverflow.com/a/5651242/1545993    try {      // image naming and path  to include sd card  appending name you choose for file      String mPath = Environment.getExternalStorageDirectory().toString() + File.separator + fileName;      // create bitmap screen capture      View v1 = activity.getWindow().getDecorView().getRootView();      v1.setDrawingCacheEnabled(true);      Bitmap bitmap = Bitmap.createBitmap(v1.getDrawingCache());      v1.setDrawingCacheEnabled(false);      File imageFile = new java.io.File(mPath);      FileOutputStream outputStream = new FileOutputStream(imageFile);      int quality = 100;      bitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStream);      outputStream.flush();      outputStream.close();      Log.d(LOG_TAG, "screenshot taken: " + imageFile.toString());      AfterScreenshot(imageFile.toString());    } catch (Throwable e) {      // Several error may come out with file handling or OOM      Log.e(LOG_TAG, e.getMessage(), e);      e.printStackTrace();    }  }  /**   * The AfterScreenshot event   */  @SimpleEvent(description = "Return image.")  public void AfterScreenshot(String image){    EventDispatcher.dispatchEvent(this, "AfterScreenshot", image);  }}