URL Scheme
我们知道可以给应用设置URL Scheme,这样别的应用就可以通过这个地址打开咱们的应用。其实还有一个api叫canOpenURL.这样如果咱们知道要检查的IOS应用列表的URL Scheme的话,就可以用canOpenURL检查一下。
假设有个APP注册了URL Scheme:myapp
if([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"myapp://com.yourcompany.appName"]];) {
//YES
} else {
//NO
}
openURL能帮助你运行Maps,SMS,Browser,Phone甚至其他的应用程序。
openURL的使用方法:
[[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:myURLString]];
自己定义URL,方法如下:
打开info.plist,添加一项URL types
展开URL types,再展开Item1,将Item1下的URL identifier修改为URL Scheme
展开URL Scheme,将Item1的内容修改为myapp
或者:(增加一下此段设置)
<key>CFBundleURLTypeskey>
<array>
<dict>
<key>CFBundleURLSchemeskey>
<array>
<string>myappstring>
array>
<key>CFBundleURLNamekey>
<string>com.yourcompany.appNamestring>
dict>
array>
其他程序可通过myapp://访问此自定义URL
可通过
[[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString: @"myapp://com.yourcompany.appName"]];
来判断用户机器中是否安装了该程序
最近接触到程序内打开自己,通过第三方控件来调用本身程序:
通过- (BOOL)application:(UIApplication )application handleOpenURL:(NSURL )url
可以通过处理url来获取信息扫行相应操作。
运行中得进程
这种方法是获取运行中的应用列表。如果应用没被运行过或不在后台,就无法获取到
// .h
@interface UIDevice (ProcessesAdditions)
- (NSArray *)runningProcesses;
@end
// .m
#import
@implementation UIDevice (ProcessesAdditions)
- (NSArray *)runningProcesses {
int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_ALL, 0};
size_t miblen = 4;
size_t size;
int st = sysctl(mib, miblen, NULL, &size, NULL, 0);
struct kinfo_proc * process = NULL;
struct kinfo_proc * newprocess = NULL;
do {
size += size / 10;
newprocess = realloc(process, size);
if (!newprocess){
if (process){
free(process);
}
return nil;
}
process = newprocess;
st = sysctl(mib, miblen, process, &size, NULL, 0);
} while (st == -1 && errno == ENOMEM);
if (st == 0){
if (size % sizeof(struct kinfo_proc) == 0){
int nprocess = size / sizeof(struct kinfo_proc);
if (nprocess){
NSMutableArray * array = [[NSMutableArray alloc] init];
for (int i = nprocess - 1; i >= 0; i--){
NSString * processID = [[NSString alloc] initWithFormat:@"%d", process[i].kp_proc.p_pid];
NSString * processName = [[NSString alloc] initWithFormat:@"%s", process[i].kp_proc.p_comm];
NSDictionary * dict = [[NSDictionary alloc] initWithObjects:[NSArray arrayWithObjects:processID, processName, nil]
forKeys:[NSArray arrayWithObjects:@"ProcessID", @"ProcessName", nil]];
[processID release];
[processName release];
[array addObject:dict];
[dict release];
}
free(process);
return [array autorelease];
}
}
}
return nil;
}
@end
// Example usage.
NSArray * processes = [[UIDevice currentDevice] runningProcesses];
for (NSDictionary * dict in processes){
NSLog(@"%@ - %@", [dict objectForKey:@"ProcessID"], [dict objectForKey:@"ProcessName"]);
}
私有API
最好用的就是私有API了,但是有审核不通过的风险
#include
Class LSApplicationWorkspace_class = objc_getClass("LSApplicationWorkspace");
NSObject* workspace = [LSApplicationWorkspace_class performSelector:@selector(defaultWorkspace)];
NSLog(@"apps: %@", [workspace performSelector:@selector(allApplications)]);