English alphabet (英语字母) The alphabet for Modern English is a Latin-script alphabet consisting of 26 letters, each having an upper- and lower-case form. The word alphabet is a compound of the first two letters of the Greek alphabet, alpha and beta. 英文…
java.lang.SecurityException: Failed to find provider null for user 0; expected to find a valid ContentProvider for this authority
产生上述异常的原因可能为:在Android 8.0 设备以上的时候, 没有提供相对应authority key的ContentProvider。
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