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发现问题出在了getClip(),就利用setClip()做预设。依然不行。网上搜索获得;从安卓Q(即10.0)开始,google限制了后台程序对剪贴板的访问.AndroidQ 对剪切板的改动是:当应用没有获取到焦点时,无法读取剪切板内容。