Java tutorial
/** * Copyright (c) 2012 Todoroo Inc * * See the file "LICENSE" for the full license governing this code. */ package com.todoroo.astrid.actfm; import java.io.File; import java.io.IOException; import java.util.ArrayList; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.content.pm.PackageManager; import android.database.Cursor; import android.graphics.Bitmap; import android.net.Uri; import android.os.Environment; import android.provider.MediaStore; import android.support.v4.app.Fragment; import android.widget.ArrayAdapter; import com.timsu.astrid.R; import com.todoroo.andlib.utility.AndroidUtilities; import com.todoroo.andlib.utility.DateUtilities; public class ActFmCameraModule { protected static final int REQUEST_CODE_CAMERA = 1; protected static final int REQUEST_CODE_PICTURE = 2; private static File lastTempFile = null; public interface ClearImageCallback { public void clearImage(); } public static void showPictureLauncher(final Activity activity, final ClearImageCallback clearImageOption) { ArrayList<String> options = new ArrayList<String>(); final Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); PackageManager pm = activity.getPackageManager(); final boolean cameraAvailable = pm.queryIntentActivities(cameraIntent, 0).size() > 0; if (cameraAvailable) options.add(activity.getString(R.string.actfm_picture_camera)); options.add(activity.getString(R.string.actfm_picture_gallery)); if (clearImageOption != null) options.add(activity.getString(R.string.actfm_picture_clear)); ArrayAdapter<String> adapter = new ArrayAdapter<String>(activity, android.R.layout.simple_spinner_dropdown_item, options.toArray(new String[options.size()])); DialogInterface.OnClickListener listener = new DialogInterface.OnClickListener() { @SuppressWarnings("nls") @Override public void onClick(DialogInterface d, int which) { if (which == 0 && cameraAvailable) { lastTempFile = getTempFile(activity); Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); if (lastTempFile != null) { intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(lastTempFile)); } activity.startActivityForResult(intent, REQUEST_CODE_CAMERA); } else if ((which == 1 && cameraAvailable) || (which == 0 && !cameraAvailable)) { Intent intent = new Intent(Intent.ACTION_GET_CONTENT); intent.setType("image/*"); activity.startActivityForResult( Intent.createChooser(intent, activity.getString(R.string.actfm_TVA_tag_picture)), REQUEST_CODE_PICTURE); } else { if (clearImageOption != null) clearImageOption.clearImage(); } } }; // show a menu of available options new AlertDialog.Builder(activity).setAdapter(adapter, listener).show().setOwnerActivity(activity); } public static void showPictureLauncher(final Fragment fragment, final ClearImageCallback clearImageOption) { ArrayList<String> options = new ArrayList<String>(); final Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); PackageManager pm = fragment.getActivity().getPackageManager(); final boolean cameraAvailable = pm.queryIntentActivities(cameraIntent, 0).size() > 0; if (cameraAvailable) options.add(fragment.getString(R.string.actfm_picture_camera)); options.add(fragment.getString(R.string.actfm_picture_gallery)); if (clearImageOption != null) options.add(fragment.getString(R.string.actfm_picture_clear)); ArrayAdapter<String> adapter = new ArrayAdapter<String>(fragment.getActivity(), android.R.layout.simple_spinner_dropdown_item, options.toArray(new String[options.size()])); DialogInterface.OnClickListener listener = new DialogInterface.OnClickListener() { @SuppressWarnings("nls") @Override public void onClick(DialogInterface d, int which) { if (which == 0 && cameraAvailable) { lastTempFile = getTempFile(fragment.getActivity()); if (lastTempFile != null) cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(lastTempFile)); fragment.startActivityForResult(cameraIntent, REQUEST_CODE_CAMERA); } else if ((which == 1 && cameraAvailable) || (which == 0 && !cameraAvailable)) { Intent intent = new Intent(Intent.ACTION_GET_CONTENT); intent.setType("image/*"); fragment.startActivityForResult( Intent.createChooser(intent, fragment.getString(R.string.actfm_TVA_tag_picture)), REQUEST_CODE_PICTURE); } else { if (clearImageOption != null) clearImageOption.clearImage(); } } }; // show a menu of available options new AlertDialog.Builder(fragment.getActivity()).setAdapter(adapter, listener).show() .setOwnerActivity(fragment.getActivity()); } @SuppressWarnings("nls") private static File getTempFile(Activity activity) { try { String storageState = Environment.getExternalStorageState(); if (storageState.equals(Environment.MEDIA_MOUNTED)) { String path = Environment.getExternalStorageDirectory().getName() + File.separatorChar + "Android/data/" + activity.getPackageName() + "/files/"; File photoFile = File.createTempFile("comment_pic_" + DateUtilities.now(), ".jpg", new File(path)); return photoFile; } } catch (IOException e) { return null; } return null; } public interface CameraResultCallback { public void handleCameraResult(Bitmap bitmap); } private static Bitmap bitmapFromUri(Activity activity, Uri uri) { String[] projection = { MediaStore.Images.Media.DATA }; Cursor cursor = activity.managedQuery(uri, projection, null, null, null); String path; if (cursor != null) { int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); cursor.moveToFirst(); path = cursor.getString(column_index); } else { path = uri.getPath(); } return AndroidUtilities.readScaledBitmap(path); } public static boolean activityResult(Activity activity, int requestCode, int resultCode, Intent data, CameraResultCallback cameraResult) { if (requestCode == ActFmCameraModule.REQUEST_CODE_CAMERA && resultCode == Activity.RESULT_OK) { Bitmap bitmap; if (data == null) { // large from camera if (lastTempFile != null) { bitmap = bitmapFromUri(activity, Uri.fromFile(lastTempFile)); lastTempFile.deleteOnExit(); lastTempFile = null; } else bitmap = null; } else bitmap = data.getParcelableExtra("data"); //$NON-NLS-1$ if (bitmap != null) { activity.setResult(Activity.RESULT_OK); cameraResult.handleCameraResult(bitmap); } return true; } else if (requestCode == ActFmCameraModule.REQUEST_CODE_PICTURE && resultCode == Activity.RESULT_OK) { Uri uri = data.getData(); Bitmap bitmap = bitmapFromUri(activity, uri); if (bitmap != null) { activity.setResult(Activity.RESULT_OK); cameraResult.handleCameraResult(bitmap); } return true; } return false; } }