Java tutorial
/* * Copyright (C) 2013 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.android.settings.users; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.app.Fragment; import android.content.ClipData; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.pm.PackageManager; import android.content.pm.UserInfo; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.Bitmap.Config; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.Rect; import android.graphics.drawable.Drawable; import android.net.Uri; import android.os.AsyncTask; import android.os.Bundle; import android.os.UserHandle; import android.provider.MediaStore; import android.provider.ContactsContract.DisplayPhoto; import android.support.v4.content.FileProvider; import android.text.TextUtils; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.WindowManager; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.EditText; import android.widget.ImageView; import android.widget.ListAdapter; import android.widget.ListPopupWindow; import android.widget.TextView; import com.android.settings.R; import java.io.File; import java.io.FileNotFoundException; import java.io.InputStream; import java.util.ArrayList; import java.util.List; public class RestrictedProfileSettings extends AppRestrictionsFragment { private static final String KEY_SAVED_PHOTO = "pending_photo"; private static final String KEY_AWAITING_RESULT = "awaiting_result"; private static final int DIALOG_ID_EDIT_USER_INFO = 1; public static final String FILE_PROVIDER_AUTHORITY = "com.android.settings.files"; private View mHeaderView; private ImageView mUserIconView; private TextView mUserNameView; private Dialog mEditUserInfoDialog; private EditUserPhotoController mEditUserPhotoController; private Bitmap mSavedPhoto; private boolean mWaitingForActivityResult; @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); if (icicle != null) { mSavedPhoto = (Bitmap) icicle.getParcelable(KEY_SAVED_PHOTO); mWaitingForActivityResult = icicle.getBoolean(KEY_AWAITING_RESULT, false); } init(icicle); } @Override public void onActivityCreated(Bundle savedInstanceState) { if (mHeaderView == null) { mHeaderView = LayoutInflater.from(getActivity()).inflate(R.layout.user_info_header, null); ((ViewGroup) getListView().getParent()).addView(mHeaderView, 0); mHeaderView.setOnClickListener(this); mUserIconView = (ImageView) mHeaderView.findViewById(android.R.id.icon); mUserNameView = (TextView) mHeaderView.findViewById(android.R.id.title); getListView().setFastScrollEnabled(true); } // This is going to bind the preferences. super.onActivityCreated(savedInstanceState); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); if (mEditUserInfoDialog != null && mEditUserInfoDialog.isShowing() && mEditUserPhotoController != null) { outState.putParcelable(KEY_SAVED_PHOTO, mEditUserPhotoController.getNewUserPhotoBitmap()); } if (mWaitingForActivityResult) { outState.putBoolean(KEY_AWAITING_RESULT, mWaitingForActivityResult); } } @Override public void onResume() { super.onResume(); // Check if user still exists UserInfo info = getExistingUser(mUser); if (info == null) { finishFragment(); } else { ((TextView) mHeaderView.findViewById(android.R.id.title)).setText(info.name); ((ImageView) mHeaderView.findViewById(android.R.id.icon)).setImageDrawable(getCircularUserIcon()); } } private UserInfo getExistingUser(UserHandle thisUser) { final List<UserInfo> users = mUserManager.getUsers(true); // Only get non-dying for (UserInfo user : users) { if (user.id == thisUser.getIdentifier()) { return user; } } return null; } @Override public void startActivityForResult(Intent intent, int requestCode) { mWaitingForActivityResult = true; super.startActivityForResult(intent, requestCode); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); mWaitingForActivityResult = false; if (mEditUserInfoDialog != null && mEditUserInfoDialog.isShowing() && mEditUserPhotoController.onActivityResult(requestCode, resultCode, data)) { return; } } @Override public void onClick(View view) { if (view == mHeaderView) { showDialog(DIALOG_ID_EDIT_USER_INFO); } else { super.onClick(view); // in AppRestrictionsFragment } } @Override public Dialog onCreateDialog(int dialogId) { if (dialogId == DIALOG_ID_EDIT_USER_INFO) { if (mEditUserInfoDialog != null) { return mEditUserInfoDialog; } LayoutInflater inflater = getActivity().getLayoutInflater(); View content = inflater.inflate(R.layout.edit_user_info_dialog_content, null); UserInfo info = mUserManager.getUserInfo(mUser.getIdentifier()); final EditText userNameView = (EditText) content.findViewById(R.id.user_name); userNameView.setText(info.name); final ImageView userPhotoView = (ImageView) content.findViewById(R.id.user_photo); Drawable drawable = null; if (mSavedPhoto != null) { drawable = CircleFramedDrawable.getInstance(getActivity(), mSavedPhoto); } else { drawable = mUserIconView.getDrawable(); if (drawable == null) { drawable = getCircularUserIcon(); } } userPhotoView.setImageDrawable(drawable); mEditUserPhotoController = new EditUserPhotoController(this, userPhotoView, mSavedPhoto, drawable, mWaitingForActivityResult); mEditUserInfoDialog = new AlertDialog.Builder(getActivity()) .setTitle(R.string.profile_info_settings_title) .setIconAttribute(R.drawable.ic_settings_multiuser).setView(content).setCancelable(true) .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { if (which == DialogInterface.BUTTON_POSITIVE) { // Update the name if changed. CharSequence userName = userNameView.getText(); if (!TextUtils.isEmpty(userName)) { CharSequence oldUserName = mUserNameView.getText(); if (oldUserName == null || !userName.toString().equals(oldUserName.toString())) { ((TextView) mHeaderView.findViewById(android.R.id.title)) .setText(userName.toString()); mUserManager.setUserName(mUser.getIdentifier(), userName.toString()); } } // Update the photo if changed. Drawable drawable = mEditUserPhotoController.getNewUserPhotoDrawable(); Bitmap bitmap = mEditUserPhotoController.getNewUserPhotoBitmap(); if (drawable != null && bitmap != null && !drawable.equals(mUserIconView.getDrawable())) { mUserIconView.setImageDrawable(drawable); new AsyncTask<Void, Void, Void>() { @Override protected Void doInBackground(Void... params) { mUserManager.setUserIcon(mUser.getIdentifier(), mEditUserPhotoController.getNewUserPhotoBitmap()); return null; } }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void[]) null); } removeDialog(DIALOG_ID_EDIT_USER_INFO); } clearEditUserInfoDialog(); } }).setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { clearEditUserInfoDialog(); } }).create(); // Make sure the IME is up. mEditUserInfoDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE); return mEditUserInfoDialog; } return null; } private void clearEditUserInfoDialog() { mEditUserInfoDialog = null; mSavedPhoto = null; } private static class EditUserPhotoController { private static final int POPUP_LIST_ITEM_ID_CHOOSE_PHOTO = 1; private static final int POPUP_LIST_ITEM_ID_TAKE_PHOTO = 2; // It seems that this class generates custom request codes and they may // collide with ours, these values are very unlikely to have a conflict. private static final int REQUEST_CODE_CHOOSE_PHOTO = 1; private static final int REQUEST_CODE_TAKE_PHOTO = 2; private static final int REQUEST_CODE_CROP_PHOTO = 3; private static final String CROP_PICTURE_FILE_NAME = "CropEditUserPhoto.jpg"; private static final String TAKE_PICTURE_FILE_NAME = "TakeEditUserPhoto2.jpg"; private final int mPhotoSize; private final Context mContext; private final Fragment mFragment; private final ImageView mImageView; private final Uri mCropPictureUri; private final Uri mTakePictureUri; private Bitmap mNewUserPhotoBitmap; private Drawable mNewUserPhotoDrawable; public EditUserPhotoController(Fragment fragment, ImageView view, Bitmap bitmap, Drawable drawable, boolean waiting) { mContext = view.getContext(); mFragment = fragment; mImageView = view; mCropPictureUri = createTempImageUri(mContext, CROP_PICTURE_FILE_NAME, !waiting); mTakePictureUri = createTempImageUri(mContext, TAKE_PICTURE_FILE_NAME, !waiting); mPhotoSize = getPhotoSize(mContext); mImageView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { showUpdatePhotoPopup(); } }); mNewUserPhotoBitmap = bitmap; mNewUserPhotoDrawable = drawable; } public boolean onActivityResult(int requestCode, int resultCode, Intent data) { if (resultCode != Activity.RESULT_OK) { return false; } final Uri pictureUri = data != null && data.getData() != null ? data.getData() : mTakePictureUri; switch (requestCode) { case REQUEST_CODE_CROP_PHOTO: onPhotoCropped(pictureUri, true); return true; case REQUEST_CODE_TAKE_PHOTO: case REQUEST_CODE_CHOOSE_PHOTO: cropPhoto(pictureUri); return true; } return false; } public Bitmap getNewUserPhotoBitmap() { return mNewUserPhotoBitmap; } public Drawable getNewUserPhotoDrawable() { return mNewUserPhotoDrawable; } private void showUpdatePhotoPopup() { final boolean canTakePhoto = canTakePhoto(); final boolean canChoosePhoto = canChoosePhoto(); if (!canTakePhoto && !canChoosePhoto) { return; } Context context = mImageView.getContext(); final List<AdapterItem> items = new ArrayList<AdapterItem>(); if (canTakePhoto()) { String title = mImageView.getContext().getString(R.string.user_image_take_photo); AdapterItem item = new AdapterItem(title, POPUP_LIST_ITEM_ID_TAKE_PHOTO); items.add(item); } if (canChoosePhoto) { String title = context.getString(R.string.user_image_choose_photo); AdapterItem item = new AdapterItem(title, POPUP_LIST_ITEM_ID_CHOOSE_PHOTO); items.add(item); } final ListPopupWindow listPopupWindow = new ListPopupWindow(context); listPopupWindow.setAnchorView(mImageView); listPopupWindow.setModal(true); listPopupWindow.setInputMethodMode(ListPopupWindow.INPUT_METHOD_NOT_NEEDED); ListAdapter adapter = new ArrayAdapter<AdapterItem>(context, R.layout.edit_user_photo_popup_item, items); listPopupWindow.setAdapter(adapter); final int width = Math.max(mImageView.getWidth(), context.getResources().getDimensionPixelSize(R.dimen.update_user_photo_popup_min_width)); listPopupWindow.setWidth(width); listPopupWindow.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { AdapterItem item = items.get(position); switch (item.id) { case POPUP_LIST_ITEM_ID_CHOOSE_PHOTO: { choosePhoto(); listPopupWindow.dismiss(); } break; case POPUP_LIST_ITEM_ID_TAKE_PHOTO: { takePhoto(); listPopupWindow.dismiss(); } break; } } }); listPopupWindow.show(); } private boolean canTakePhoto() { return mImageView.getContext().getPackageManager().queryIntentActivities( new Intent(MediaStore.ACTION_IMAGE_CAPTURE), PackageManager.MATCH_DEFAULT_ONLY).size() > 0; } private boolean canChoosePhoto() { Intent intent = new Intent(Intent.ACTION_GET_CONTENT); intent.setType("image/*"); return mImageView.getContext().getPackageManager().queryIntentActivities(intent, 0).size() > 0; } private void takePhoto() { Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); appendOutputExtra(intent, mTakePictureUri); mFragment.startActivityForResult(intent, REQUEST_CODE_TAKE_PHOTO); } private void choosePhoto() { Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null); intent.setType("image/*"); appendOutputExtra(intent, mTakePictureUri); mFragment.startActivityForResult(intent, REQUEST_CODE_CHOOSE_PHOTO); } private void cropPhoto(Uri pictureUri) { // TODO: Use a public intent, when there is one. Intent intent = new Intent("com.android.camera.action.CROP"); intent.setDataAndType(pictureUri, "image/*"); appendOutputExtra(intent, mCropPictureUri); appendCropExtras(intent); if (intent.resolveActivity(mContext.getPackageManager()) != null) { mFragment.startActivityForResult(intent, REQUEST_CODE_CROP_PHOTO); } else { onPhotoCropped(pictureUri, false); } } private void appendOutputExtra(Intent intent, Uri pictureUri) { intent.putExtra(MediaStore.EXTRA_OUTPUT, pictureUri); intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION); intent.setClipData(ClipData.newRawUri(MediaStore.EXTRA_OUTPUT, pictureUri)); } private void appendCropExtras(Intent intent) { intent.putExtra("crop", "true"); intent.putExtra("scale", true); intent.putExtra("scaleUpIfNeeded", true); intent.putExtra("aspectX", 1); intent.putExtra("aspectY", 1); intent.putExtra("outputX", mPhotoSize); intent.putExtra("outputY", mPhotoSize); } private void onPhotoCropped(final Uri data, final boolean cropped) { new AsyncTask<Void, Void, Bitmap>() { @Override protected Bitmap doInBackground(Void... params) { if (cropped) { try { InputStream imageStream = mContext.getContentResolver().openInputStream(data); return BitmapFactory.decodeStream(imageStream); } catch (FileNotFoundException fe) { return null; } } else { // Scale and crop to a square aspect ratio Bitmap croppedImage = Bitmap.createBitmap(mPhotoSize, mPhotoSize, Config.ARGB_8888); Canvas canvas = new Canvas(croppedImage); Bitmap fullImage = null; try { InputStream imageStream = mContext.getContentResolver().openInputStream(data); fullImage = BitmapFactory.decodeStream(imageStream); } catch (FileNotFoundException fe) { return null; } if (fullImage != null) { final int squareSize = Math.min(fullImage.getWidth(), fullImage.getHeight()); final int left = (fullImage.getWidth() - squareSize) / 2; final int top = (fullImage.getHeight() - squareSize) / 2; Rect rectSource = new Rect(left, top, left + squareSize, top + squareSize); Rect rectDest = new Rect(0, 0, mPhotoSize, mPhotoSize); Paint paint = new Paint(); canvas.drawBitmap(fullImage, rectSource, rectDest, paint); return croppedImage; } else { // Bah! Got nothin. return null; } } } @Override protected void onPostExecute(Bitmap bitmap) { if (bitmap != null) { mNewUserPhotoBitmap = bitmap; mNewUserPhotoDrawable = CircleFramedDrawable.getInstance(mImageView.getContext(), mNewUserPhotoBitmap); mImageView.setImageDrawable(mNewUserPhotoDrawable); } new File(mContext.getCacheDir(), TAKE_PICTURE_FILE_NAME).delete(); new File(mContext.getCacheDir(), CROP_PICTURE_FILE_NAME).delete(); } }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void[]) null); } private static int getPhotoSize(Context context) { Cursor cursor = context.getContentResolver().query(DisplayPhoto.CONTENT_MAX_DIMENSIONS_URI, new String[] { DisplayPhoto.DISPLAY_MAX_DIM }, null, null, null); try { cursor.moveToFirst(); return cursor.getInt(0); } finally { cursor.close(); } } private Uri createTempImageUri(Context context, String fileName, boolean purge) { final File folder = context.getCacheDir(); folder.mkdirs(); final File fullPath = new File(folder, fileName); if (purge) { fullPath.delete(); } final Uri fileUri = FileProvider.getUriForFile(context, FILE_PROVIDER_AUTHORITY, fullPath); return fileUri; } private static final class AdapterItem { final String title; final int id; public AdapterItem(String title, int id) { this.title = title; this.id = id; } @Override public String toString() { return title; } } } }