day4.29總結_友錄_設定圓圈和顯示連絡人的詳細資料

標籤：

一、顯示頭像

ContactAdapter public View getView(int position, View convertView, ViewGroup parent) { ViewHolder vh; if(convertView==null){ convertView = inflater.inflate(R.layout.item_contact_layout, parent,false); vh = new ViewHolder(); vh.ivAvatar = (ImageView) convertView.findViewById(R.id.iv_item_contact_avatar); vh.tvName = (TextView) convertView.findViewById(R.id.tv_item_contact_username); convertView.setTag(vh); }else{ vh = (ViewHolder) convertView.getTag(); } Contact contact = getItem(position); vh.tvName.setText(contact.getName()); //根據contact對象的photo_id屬性，去獲得頭像圖片 if(position==0){ //如果是第一個連絡人，頭像用"加號" vh.ivAvatar.setImageResource(R.drawable.ic_add_contact); }else{ vh.ivAvatar.setImageBitmap(biz.getAvatar(contact.getPhoto_id())); } return convertView; }

二、設定圓圈

ContactBiz /**  * 業務類  * 關注所有項目中與“連絡人”相關的內容  * @author pjy  *  */ public class ContactBiz { private Context context; public ContactBiz(Context context){  傳一個上下文，後面會用到 this.context = context; } /**  * 擷取裝置上所有的連絡人資訊  * 並且按照姓名排序  *  * @return  */ public List<Contact> getAllContacts(){ List<Contact> list = YouluUtil.getAllContacts(context); Collections.sort(list,new Comparator<Contact>() {根據名字排序   @Override public int compare(Contact lhs, Contact rhs) { return lhs.getName().toUpperCase().compareTo(rhs.getName().toUpperCase()); } }); Contact contact = new Contact(); contact.setName("新增連絡人...");    添加符號也要給一個建一個對象 list.add(0,contact); return list; } /**  * 獲得頭像圖片  * @param photoId  * @return  */ public Bitmap getAvatar(int photoId){ return YouluUtil.getAvatar(context,photoId); }   public void showDetail(Contact contact) { YouluUtil.showDetail(context,contact); } }

YouluUtil public static Bitmap getAvatar(Context context, int photoId) {擷取我的頭像 Bitmap bitmap = null; if(photoId==0){ //沒有為連絡人設定頭像 //手動指定一個頭像 //bitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.ic_launcher); bitmap = getMyAvatar(context); }else{ //有頭像，DATA資料表中的data15列 ContentResolver cr = context.getContentResolver(); Cursor cursor = cr.query(Data.CONTENT_URI, new String[]{Data.DATA15}, 根據Id查頭像 Data._ID + " = ?", new String[]{String.valueOf(photoId)}, null); cursor.moveToNext();//指向第一條資料 byte[] bytes = cursor.getBlob(0); //方形圖 Bitmap avatar = BitmapFactory.decodeByteArray(bytes, 0, bytes.length); cursor.close(); bitmap = getCircleAvatar(context,avatar); } return bitmap; } private static Bitmap getCircleAvatar(Context context, Bitmap avatar) { Bitmap bitmap = Bitmap.createBitmap(avatar.getWidth(), avatar.getHeight(), Bitmap.Config.ARGB_8888); 位元影像位元越高代表其可以儲存的顏色資訊越多，當然映像也就越逼真 Canvas canvas = new Canvas(bitmap); Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); paint.setColor(Color.BLACK); float radius = Math.min(avatar.getWidth(), avatar.getHeight())/2;擷取半徑 //混合模式中的DST canvas.drawCircle(avatar.getWidth()/2, avatar.getHeight()/2, radius , paint); paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));設定前景後景模式 //混合模式中的SRC canvas.drawBitmap(avatar, 0, 0, paint); //畫白邊 paint.setColor(Color.WHITE); paint.setStyle(Paint.Style.STROKE); float strokeWidth = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 2, context.getResources().getDisplayMetrics());螢幕的密度，類似解析度 paint.setStrokeWidth(strokeWidth); canvas.drawCircle(avatar.getWidth()/2, avatar.getHeight()/2, radius-strokeWidth/2, paint); return bitmap; }   /**  * 手動繪製一個頭像出來  * 深灰色背景，前景白色文字“友錄”  * @return  */ private static Bitmap getMyAvatar(Context context) { Bitmap bitmap = Bitmap.createBitmap(150, 150, Bitmap.Config.ARGB_8888); //繪製圖形需要2個對象 //畫布Canvas Canvas canvas = new Canvas(bitmap); //畫筆Paint Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); paint.setColor(Color.DKGRAY); paint.setStyle(Style.FILL); canvas.drawCircle(75, 75, 75, paint); paint.setColor(Color.WHITE); //sp--螢幕的密度-->px int sp = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 12, context.getResources().getDisplayMetrics()); paint.setTextSize(sp); Rect bounds = new Rect(); paint.getTextBounds("友錄", 0, 2, bounds ); float x = 75 - bounds.width()/2; float y = 75 + bounds.height()/2; canvas.drawText("友錄", x, y, paint); //畫白邊 paint.setStyle(Paint.Style.STROKE); float strokeWidth = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 2, context.getResources().getDisplayMetrics()); paint.setStrokeWidth(strokeWidth); canvas.drawCircle(75, 75, 75-strokeWidth/2, paint); return bitmap; } }

 

 

 

三、顯示連絡人的詳細資料

YouluUtil public static void showDetail(final Context context, final Contact contact) { AlertDialog.Builder builder = new AlertDialog.Builder(context); //標準的AlertDialog.Builder的寫法 //buidler.setIcon/setTitle/setMessage/setPositiveButton/setNegativieButton //buidler.create().show(); final AlertDialog dialog = builder.create(); dialog.show(); Window window = dialog.getWindow(); LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);找到系統的inflater View view = inflater.inflate(R.layout.detail_layout, null); window.setContentView(view); ImageView ivAvatar = (ImageView) view.findViewById(R.id.iv_detail_avatar); TextView tvName = (TextView) view.findViewById(R.id.tv_detail_name); TextView tvNumber = (TextView) view.findViewById(R.id.tv_detail_number); ivAvatar.setImageBitmap(getAvatar(context, contact.getPhoto_id())); tvName.setText(contact.getName()); tvNumber.setText(contact.getNumber()); ImageView ivEdit = (ImageView) view.findViewById(R.id.iv_detail_edit); ImageView ivClose = (ImageView) view.findViewById(R.id.iv_detail_close); ivClose.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { dialog.dismiss(); } }); ivEdit.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { //發送一個隱式intent，開啟系統的連絡人介面編輯contact的資訊 Intent intent = new Intent(Intent.ACTION_EDIT); Uri data = ContactsContract.Contacts.getLookupUri(contact.get_id(), contact.getLookupKey()); intent.setDataAndType(data , ContactsContract.Contacts.CONTENT_ITEM_TYPE); intent.putExtra("finishActivityOnSaveCompleted", true); context.startActivity(intent); dialog.dismiss(); } }); }

 

 

 

 

 

 

 

day4.29總結_友錄_設定圓圈和顯示連絡人的詳細資料