同步操作将从 OpenHarmony/docs 强制同步,此操作会覆盖自 Fork 仓库以来所做的任何修改,且无法恢复!!!
确定后同步将在后台操作,完成时将刷新页面,请耐心等待。
表 1 文件操作接口说明
int UtilsFileWrite(int fd, const char *buf, unsigned int len) |
|
文件操作使用示例:
// open && write
char fileName[] = "testfile";
static const char def[] = "utils_file_operation implement.";
int fd = UtilsFileOpen(fileName, O_RDWR_FS | O_CREAT_FS | O_TRUNC_FS, 0);
printf("file handle = %d\n", fd);
int ret = UtilsFileWrite(fd, def, strlen(def));
printf("write ret = %d\n", ret);
// seek
ret = UtilsFileSeek(fd, 5, SEEK_SET_FS);
printf("lseek ret = %d\n", ret);
// read && close
char buf[64] = {0};
int readLen = UtilsFileRead(fd, buf, 64);
ret = UtilsFileClose(fd);
printf("read len = %d : buf = %s\n", readLen, buf);
// stat
int fileLen = 0;
ret = UtilsFileStat(fileName, &fileLen);
printf("file size = %d\n", fileLen);
// delete
ret = UtilsFileDelete(fileName);
printf("delete ret = %d\n", ret);
表 2 KV存储接口说明
int UtilsGetValue(const char* key, char* value, unsigned int len) |
|
KV存储使用示例:
// set
char key[] = "rw.sys.version_100";
char value[] = "Hello kv operation implement!";
int ret = UtilsSetValue(key, value);
printf("UtilsSetValue set ret = %d\n", ret);
// get
char temp[128] = {0};
ret = UtilsGetValue(key, temp, 128);
printf("UtilsGetValue get ret = %d, temp = %s\n", ret, temp);
// delete
ret = UtilsDeleteValue(key);
printf("UtilsDeleteValue delete ret = %d\n", ret);
基于AbilityKit开发KV存储的native应用。
基于KV存储提供的接口编写用户程序,并编译出so(libLauncher.so)文件。
// set
char key[] = "rw.sys.version_100";
char value[] = "Hello kv operation implement!";
int ret = UtilsSetValue(key, value);
printf("UtilsSetValue set ret = %d\n", ret);
// get
char temp[128] = {0};
ret = UtilsGetValue(key, temp, 128);
printf("UtilsGetValue get ret = %d, temp = %s\n", ret, temp);
// delete
ret = UtilsDeleteValue(key);
printf("UtilsDeleteValue delete ret = %d\n", ret);
编写config.json文件,内容如下:
{
"app": {
"bundleName": "com.huawei.launcher",
"vendor": "huawei",
"version": {
"code": 1,
"name": "1.0"
}
},
"deviceConfig": {
"default": {
"reqSdk": {
"compatible": "zsdk 1.0.0",
"target": "zsdk 1.0.1"
},
"keepAlive": false
},
"smartCamera": {
"reqSdk": {
"compatible": "zsdk 1.0.0",
"target": "zsdk 1.0.1"
},
"keepAlive": false
}
},
"module": {
"package": "com.huawei.launcher",
"name": ".MyHarmonyAbilityPackage",
"deviceType": [
"phone", "tv","tablet", "pc","car","smartWatch","sportsWatch","smartCamera"
],
"distro": {
"deliveryWithInstall": true,
"moduleName": "Launcher",
"moduleType": "entry"
},
"abilities": [{
"name": "MainAbility",
"icon": "res/drawable/phone.png",
"label": "test app 1",
"launchType": "standard",
"type": "page"
},
{
"name": "SecondAbility",
"icon": "res/drawable/phone.png",
"label": "test app 2",
"launchType": "standard",
"type": "page"
},
{
"name": "ServiceAbility",
"icon": "res/drawable/phone.png",
"label": "test app 2",
"launchType": "standard",
"type": "service"
}
]
}
}
生成hap包。
连接单板,通过串口向单板发送安装KV存储native应用的命令。
./nfs/dev_tools/bin/bm install -p /nfs/Launcher.hap
通过串口向单板发送运行KV存储native应用的命令。
./nfs/dev_tools/bin/aa start -p com.huawei.launcher -n ServiceAbility
此处可能存在不合适展示的内容,页面不予展示。您可通过相关编辑功能自查并修改。
如您确认内容无涉及 不当用语 / 纯广告导流 / 暴力 / 低俗色情 / 侵权 / 盗版 / 虚假 / 无价值内容或违法国家有关法律法规的内容,可点击提交进行申诉,我们将尽快为您处理。