Define a method that calls into the represented Java class

@param context Context @return All the Applications we Installed.

获取文本框的布局 @param textView @return

TODO(t10737622): Improve on-device symbolification

Returns the index of a key in the set. @param key The key to search for. @return Returns the index of the key if it exists, else a negative integer.

Return true if the array map contains no items.

Return the key at the given index in the array. @param index The desired index, must be between 0 and {@link #size()}-1. @return Returns the key store

Open the atomic file for reading. If there previously was an incomplete write, this will roll back to the last good data before opening for read. Yo

Optimize the Dalvik-Cache for the specified package. @param pkg package name @throws IOException

将给定字符串的开头改为小写. @param string @return

Perform a {@link #put(Object, Object)} of all key/value pairs in <var>map</var> @param map The map whose contents are to be retrieved.

java.io thinks that a read at EOF is an error and should return -1, contrary to traditional Unix practice where you'd read until you got 0 bytes (and

@param progress the progress ,range [0,100]