StudyHarmonyOS关于HarmonyOS应用开发基础组件的使用

/* * Copyright (c) 2021 Huawei Device Co., Ltd. * 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.harmonyos.studyharmonyos.slice; import com.harmonyos.studyharmonyos.ResourceTable; import com.harmonyos.studyharmonyos.bean.MailDataBean; import com.harmonyos.studyharmonyos.helper.DeviceSelectDialog; import com.harmonyos.studyharmonyos.helper.WidgetHelper; import com.harmonyos.studyharmonyos.helper.listcomponent.CommentViewHolder; import com.harmonyos.studyharmonyos.helper.listcomponent.ListComponentAdapter; import com.harmonyos.studyharmonyos.util.DeviceUtils; import com.harmonyos.studyharmonyos.util.LogUtils; import ohos.aafwk.ability.AbilitySlice; import ohos.aafwk.ability.DataAbilityHelper; import ohos.aafwk.ability.DataAbilityRemoteException; import ohos.aafwk.ability.IAbilityContinuation; import ohos.aafwk.content.Intent; import ohos.aafwk.content.IntentParams; import ohos.agp.components.*; import ohos.agp.utils.LayoutAlignment; import ohos.agp.window.dialog.CommonDialog; import ohos.app.Context; import ohos.data.resultset.ResultSet; import ohos.distributedschedule.interwork.DeviceInfo; import ohos.distributedschedule.interwork.DeviceManager; import ohos.media.image.ImageSource; import ohos.media.photokit.metadata.AVStorage; import ohos.utils.net.Uri; import java.io.*; import java.util.ArrayList; import java.util.List; import static ohos.agp.components.ComponentContainer.LayoutConfig.MATCH_PARENT; /** * Mail edit slice * * @since 2021-02-04 */ public class MailEditSlice extends AbilitySlice implements IAbilityContinuation { private static final String TAG = MailEditSlice.class.getSimpleName(); private static final int CACHE_SIZE = 8 * 1024; private static final int IO_END_LEN = -1; private static final int TIPS_DURATION_TIME = 50; private TextField receiver; private TextField cc; private TextField title; private TextField content; private Image doConnectImg; private Button btnHuiqian; private final List<String> mDialogDataList = new ArrayList<>();//分布式数据地址列表 private ListComponentAdapter mRecycleItemProvider;//邮件对话框附件列表适配器 private CommonDialog fileDialog; private final List<String> mAttachmentDataList = new ArrayList<>();//已选择的附件数据 private ListComponentAdapter mAttachmentProvider;//附件列表适配器 @Override public void onStart(Intent intent) { super.onStart(intent); LogUtils.info(TAG, "is onStart begin"); Component view = LayoutScatter.getInstance(this).parse(ResourceTable.Layout_moudle_mail_edit, null, false); ComponentContainer rootLayout; if (!(view instanceof ComponentContainer)) { rootLayout = new DirectionalLayout(this); } else { adaptView(view); setClickAction(view); rootLayout = (ComponentContainer) view; } super.setUIContent(rootLayout); LogUtils.info(TAG, "is onStart end"); } private void adaptView(Component rootView) { Component view = rootView.findComponentById(ResourceTable.Id_mail_edit_receiver); if (view instanceof TextField) { receiver = (TextField) view; } view = rootView.findComponentById(ResourceTable.Id_mail_edit_cc); if (view instanceof TextField) { cc = (TextField) view; } view = rootView.findComponentById(ResourceTable.Id_mail_edit_title); if (view instanceof TextField) { title = (TextField) view; } doConnectImg = (Image) rootView.findComponentById(ResourceTable.Id_mail_edit_continue); view = rootView.findComponentById(ResourceTable.Id_mail_edit_content); if (view instanceof TextField) { content = (TextField) view; } btnHuiqian = (Button) rootView.findComponentById(ResourceTable.Id_btn_huiqian); // 初始化界面 fillView(); setAttachmentProvider(rootView); rootView.findComponentById(ResourceTable.Id_btn_huiqian).setClickedListener(listener -> { try { reverseContinueAbility(); } catch (IllegalStateException e) { e.printStackTrace(); } }); } //构建附件列表 private void setAttachmentProvider(Component rootView) { ListContainer mAttachmentContainer = (ListContainer) rootView.findComponentById(ResourceTable.Id_attachment_list); mAttachmentProvider = new ListComponentAdapter<String>( getContext(), mAttachmentDataList, ResourceTable.Layout_attachment_item_horizontal) { @Override public void onBindViewHolder(CommentViewHolder commonViewHolder, String item, int position) { commonViewHolder .getTextView(ResourceTable.Id_item_title1) .setText(item.substring(item.lastIndexOf(File.separator) + 1)); FileInputStream fileInputStream = null; try { fileInputStream = new FileInputStream(item); ImageSource source = ImageSource.create(fileInputStream, null); commonViewHolder .getImageView(ResourceTable.Id_image) .setPixelMap(source.createPixelmap(0, null)); } catch (FileNotFoundException e) { LogUtils.error(TAG, "setAttachmentProvider Error"); } finally { try { fileInputStream.close(); } catch (IOException e) { LogUtils.error(TAG, "close fileInputStream Error"); } } } }; mAttachmentContainer.setItemProvider(mAttachmentProvider); } //初始化数据 private void fillView() { if (cachedMailData == null) { receiver.setText("user1;user2");//初始化默认收件人 cc.setText("user3");//初始化默认抄送人员 title.setText("RE：HarmonyOS 2.0 体验");//初始化主题 } else { receiver.setText(cachedMailData.getReceiver()); cc.setText(cachedMailData.getCc()); title.setText(cachedMailData.getTitle()); content.setText(cachedMailData.getContent()); if (cachedMailData.getPictureDataList().size() > 0) { // 清空现有数据，并刷新 mAttachmentDataList.clear(); mAttachmentDataList.addAll(cachedMailData.getPictureDataList()); } } } //迁移与选择附件 private void setClickAction(Component rootView) { //迁移 doConnectImg.setClickedListener( clickedView -> { // 通过FLAG_GET_ONLINE_DEVICE标记获得在线设备列表 List<DeviceInfo> deviceInfoList = DeviceManager.getDeviceList(DeviceInfo.FLAG_GET_ONLINE_DEVICE); if (deviceInfoList.size() > 0) {//如果存在在网设备 DeviceSelectDialog dialog = new DeviceSelectDialog(this); //赋值回调函数，点击确定后迁移到�