NativeScript-Loading-Indicator 是一个 NativeScript 插件，可以在当前页面上叠加一个加载指示器。例如，可以用于在从 API 获取数据时防止用户与 UI 交互，同时通知用户有操作正在进行。

安装

NativeScript 7+

ns plugin add @nstudio/nativescript-loading-indicator

NativeScript 低于 7

tns plugin add @nstudio/[email protected]

屏幕截图

iOS

Android

示例

TypeScript

import {
  LoadingIndicator,
  Mode,
  OptionsCommon,
} from '@nstudio/nativescript-loading-indicator';

const indicator = new LoadingIndicator();

const options: OptionsCommon = {
  message: 'Loading...',
  details: 'Additional detail note!',
  progress: 0.65,
  margin: 10,
  dimBackground: true,
  color: '#4B9ED6', // color of indicator and labels
  // background box around indicator
  // hideBezel will override this if true
  backgroundColor: 'yellow',
  userInteractionEnabled: false, // default true. Set false so that the touches will fall through it.
  hideBezel: true, // default false, can hide the surrounding bezel
  mode: Mode.AnnularDeterminate, // see options below
  android: {
    view: someStackLayout.android, // Target view to show on top of (Defaults to entire window)
    cancelable: true,
    cancelListener: function (dialog) {
      console.log('Loading cancelled');
    },
  },
  ios: {
    view: someButton.ios, // Target view to show on top of (Defaults to entire window)
    square: false,
  },
};

indicator.show(options);

// after some async event maybe or a timeout hide the indicator
indicator.hide();

javascript

const LoadingIndicator = require('@nstudio/nativescript-loading-indicator')
  .LoadingIndicator;
const Mode = require('@nstudio/nativescript-loading-indicator').Mode;

const loader = new LoadingIndicator();

// optional options
// android and ios have some platform specific options
const options = {
  message: 'Loading...',
  details: 'Additional detail note!',
  progress: 0.65,
  margin: 10,
  dimBackground: true,
  color: '#4B9ED6', // color of indicator and labels
  // background box around indicator
  // hideBezel will override this if true
  backgroundColor: 'yellow',
  userInteractionEnabled: false, // default true. Set false so that the touches will fall through it.
  hideBezel: true, // default false, can hide the surrounding bezel
  mode: Mode.AnnularDeterminate, // see options below
  android: {
    view: android.view.View, // Target view to show on top of (Defaults to entire window)
    cancelable: true,
    cancelListener: function (dialog) {
      console.log('Loading cancelled');
    },
  },
  ios: {
    view: UIView, // Target view to show on top of (Defaults to entire window)
  },
};

loader.show(options); // options is optional

// Do whatever it is you want to do while the loader is showing, then

loader.hide();

常见选项

export interface OptionsCommon {
  /**
   * Message in the loading indicator.
   */
  message?: string;

  /**
   * Details message in the loading indicator.
   */
  details?: string;

  /**
   * Color of the message text.
   */
  color?: string;

  /**
   * Background color of the loading indicator.
   */
  backgroundColor?: string;

  /**
   * Progress of the indicator when not using CustomView or Text Mode.
   */
  progress?: number;

  /**
   * Margin for the message/indicator to the edge of the bezel.
   */
  margin?: number;

  /**
   * Set true to allow user interaction.
   */
  userInteractionEnabled?: boolean;

  /**
   * Dim the background behind the indicator.
   */
  dimBackground?: boolean;

  /**
   * Hide bezel around indicator
   */
  hideBezel?: boolean;

  /**
   * The mode of the loading indicator.
   */
  mode?: Mode;

  /**
   * If `mode` is set to CustomView, then you can pass an image or view to show in the loading indicator.
   */
  customView?: any;

  /**
   * iOS specific configuration options.
   */
  ios?: OptionsIOS;

  /**
   * Android specific configuration options.
   */
  android?: OptionsAndroid;
}

Android 特定

export interface OptionsAndroid {
  /**
   * Native View instance to anchor the loading indicator to.
   */
  view?: android.view.View;
  max?: number;
  progressNumberFormat?: string;
  progressPercentFormat?: number;
  progressStyle?: number;
  secondaryProgress?: number;
  cancelable?: boolean;
  cancelListener?: (dialog: any) => void;
  elevation?: number;
}

iOS 特定

export interface OptionsIOS {
  /**
   * Native View instance to anchor the loading indicator to.
   */
  view?: UIView;
  square?: boolean;
}

模式枚举

export enum Mode {
  Indeterminate = 0,
  Determinate = 1,
  DeterminateHorizontalBar = 2,
  AnnularDeterminate = 3,
  CustomView = 4,
  Text = 5,
}