标记一下

                     // 调出手机market并搜索出相应的APK

                    Uri uri = Uri.parse("market://search?q=pname:"
                            + SCAN_PACKAGE);
                    Intent scanintent = new Intent(Intent.ACTION_VIEW, uri);
                    try
                    {
                        startActivity(scanintent);
                    }
                    catch (ActivityNotFoundException anfe)
                    {
                        Log.w(TAG,
                                "Android Market is not installed; cannot install Barcode Scanner");
                    }  
	

 

// 调至系统联系人界面，选择联系人，并返回数据

 

                    Intent intent = new Intent();
                    intent.setAction(Intent.ACTION_PICK);
                    intent.setData(ContactsContract.Contacts.CONTENT_URI);
                    try
                    {
                        startActivityForResult(intent, FLAG_RESULT_SYS_CONTACTS);
                    }
                    catch (ActivityNotFoundException e1)
                    {
                        e1.printStackTrace();
                        Log.w(TAG, "No contacts pick...");
                    }