val filter = IntentFilter()
filter.addDataScheme("package")//安装卸载必须加
filter.addAction(Intent.ACTION_PACKAGE_ADDED)
filter.addAction(Intent.ACTION_PACKAGE_REMOVED)
filter.addAction(Intent.ACTION_PACKAGE_FULLY_REMOVED)//如不生效添加这行
mContext.registerReceiver(receiver, filter)
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