android在fragment实现加载动画并工具化单例模式

原创已于 2023-03-04 23:01:23 修改 · 314 阅读

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于 2023-03-04 19:26:14 首次发布

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FragmentLoadingUtil是一个公共工具类，用于在Android中方便地显示和隐藏加载动画。它通过LayoutInflaterinflate布局，并添加到父视图中，支持自定义标签以便在多个场景下使用。提供方法如startLoading和hideLoading来控制加载视图的显示和隐藏。

效果

在这里插入图片描述

使用

FragmentLoadingUtil.getInstance().startLoading(getContext(), root.findViewById(R.id.fl_loading), LOADING_TAG);

FragmentLoadingUtil

package com.coral3.common_module.utils;

import android.app.Activity;
import android.app.Fragment;
import android.content.Context;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.LinearLayout;

import com.coral3.common_module.R;

public class FragmentLoadingUtil {

    private View loadingView;
    private ViewGroup contentView;
    public static FragmentLoadingUtil fragmentLoadingUtil;
    private String tag;

    public static FragmentLoadingUtil getInstance(){
        if(null == fragmentLoadingUtil) fragmentLoadingUtil = new FragmentLoadingUtil();
        return fragmentLoadingUtil;
    }

    public void startLoading(Context context, View root, String flag){
        contentView = (ViewGroup)root;
        tag = flag;
        View lv = contentView.findViewWithTag(tag);
        if(null == lv) {
            loadingView = LayoutInflater.from(context).inflate(R.layout.view_loading, null, false);
            loadingView.setTag(tag);
            contentView.addView(loadingView);
        }else {
            loadingView = lv;
            loadingView.setVisibility(View.VISIBLE);
        }
    }

    public void startLoading(Context context, View root){
        contentView = (ViewGroup)root;
        tag = context.getPackageName() + context.getClass().toString();
        View lv = contentView.findViewWithTag(tag);
        if(null == lv) {
            loadingView = LayoutInflater.from(context).inflate(R.layout.view_loading, null, false);
            loadingView.setTag(tag);
            contentView.addView(loadingView);
        }else {
            loadingView = lv;
            loadingView.setVisibility(View.VISIBLE);
        }
    }

    public void hideLoading(){
        if (loadingView != null) {
            loadingView.setVisibility(View.GONE);
        }
    }

    public void startLoadingInUiThread(Context context, View contentView){
        ((Activity)context).runOnUiThread(new Runnable() {
            @Override
            public void run() {
                startLoading(context, contentView, tag);
            }
        });
    }

    public void hideLoadingInUiThread(Activity activity){
        activity.runOnUiThread(new Runnable() {
            @Override
            public void run() {
                hideLoading();
            }
        });
    }
}