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Android Studio无法执行Java main方法的问题

Android Studio升级到最新版3.6.1后，新建了个项目，发现无法执行Java类的main方法，很蛋疼。试了网上的各种方法，比如切换gradle离线模式、gradle.properties中添加android.enableAapt2=false等，我还尝试了重新情况Gradle缓存、重新下...

flutter中实现仿Android端的onResume和onPause方法

flutter中实现仿Android端的onResume和onPause方法Android端Activity的生命周期Android中的Activity的生命周期方法如下所示：这些方法中，对我们比较重要的如下：onCreate方法：页面创建时调用。onDestroy方法：页面销毁时调用，除了正常关闭...

Android在子线程中更新UI的方法汇总(共七种)

Android在子线程中更新UI的方法汇总(共七种)1、常规写法：new Handler()的handleMessage()和handler.sendMessage(msg) Handler handler = new Handler() { @Override public void handle...

Android 踩坑记录，用.split()方法分割字符串返回null

切记，要转义，因为英文的"."是特殊的符号。String str = "阿悠悠-烟雨城.mp3"; String[] song_Author_Name = str.split("\\.");

android中的提示信息显示方法（toast应用）

android中toast的应用：本程序实现了用户点击按钮，桌面显示用户在程序中设定好的提示信息package com.dou.button.activity; import android.app.Activity; import android.os.Bundle; import android...

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