1.编译种错误提示: arm-none-linux-gnueabi-gcc: directory: No such file or directory arm-none-linux-gnueabi-gcc: directory": No such file or directory <command-line>:0:16: warning: missing terminating " character 解决方案: https://github.com/Pivosgroup…
1.在阅读源码的时候经常发现有一些标志属性使用一些位操作来判断是否具有该标志,增加标志或者去除标志. 比如View.java中的 /** * This view does not want keystrokes. Use with TAKES_FOCUS_MASK when * calling setFlags. */ private static final int NOT_FOCUSABLE = 0x00000000; /** * This view wants keystrokes. Us…
在Android源码中添加C/CPP可执行程序一般保存在external目录中 下面是每个文件的内容 ①add.c #include "add.h" int add (int a, int b) { return a+b; } ②add.h #ifndef __ADD_H__ #define __ADD_H__ int add(int a, int b); #endif ③main.c #include <stdio.h> #include <cutils/log.h…
一:关机菜单添加飞行模式选项 源码路径:frameworks/base/core/res/res/values/config.xml 增加<item>airplane</item> <!-- Defines the default set of global actions. Actions may still be disabled or hidden based on the current state of the device. Each item must be o…
一:如何自定义TextView实现滚动效果 继承TextView基类 重写构造方法 修改isFocused()方法,获取焦点. /* * Copyright (C) 2015 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the…