我正在尝试从Google Play安装应用.我可以理解,在打开Google Play商店网址时,它会打开Google Play,当我按下后退按钮时,活动会恢复.
Intent marketIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(appURL));
marketIntent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY | Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
startActivity(marketIntent);
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当我回到活动时,我试着调用它onResume()来检查应用程序是否已安装,但是我收到错误:
@Override
protected void onResume() {
super.onResume();
boolean installed = false;
while (!installed) {
installed = appInstalledOrNot(APPPACKAGE);
if (installed) {
Toast.makeText(this, "App installed", Toast.LENGTH_SHORT).show();
}
}
}
private boolean appInstalledOrNot(String uri) {
PackageManager pm = getPackageManager();
boolean app_installed = false;
try {
pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
app_installed = true;
}
catch (PackageManager.NameNotFoundException e) {
app_installed = false;
}
return app_installed ;
}
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错误如下:
E/AndroidRuntime(796):java.lang.RuntimeException:无法启动活动ComponentInfo {com.example.appinstaller/com.example.appinstaller.MainActivity}:android.content.ActivityNotFoundException:找不到处理Intent的活动{act = …
基于Python-API,我已经配置并安装了协议缓冲区(如http://worthynote.blogspot.com/2011/05/protobuf-compiler-on-mac.html中所述)和python 2.7.当我运行命令时
python examples.py
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并仍然面临错误:
File "examples.py", line 3, in <module>
import market_proto
File "/Users/siddharthan64/Downloads/android-market-api-py-master/market_proto.py", line 3, in <module>
from google.protobuf import descriptor
ImportError: No module named google.protobuf
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有什么想法在这里出错吗?
我在编译时遇到错误.似乎很奇怪.它作为详细视图应用程序工作,但使用单一视图似乎不起作用.这是错误细节:
Undefined symbols for architecture i386:
"_OBJC_CLASS_$_RssArticle", referenced from:
objc-class-ref in RssXmlParser.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Run Code Online (Sandbox Code Playgroud) 我有一个UIButton,这是一个标志.这个徽标按钮将永远发光,但触摸时会停止发光.它就像一个发光的动画.
有什么建议吗?
Undefined symbols for architecture i386:
"_OBJC_CLASS_$_CABasicAnimation", referenced from:
objc-class-ref in UIView+Glow.o
"_OBJC_CLASS_$_CAMediaTimingFunction", referenced from:
objc-class-ref in UIView+Glow.o
"_kCAMediaTimingFunctionEaseInEaseOut", referenced from:
-[UIView(Glow) startGlowing] in UIView+Glow.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Run Code Online (Sandbox Code Playgroud) Anyoone可以帮助我如何使用添加动作来调用以下方法UIButton.
-(void)navigatePics:(id)sender andIndex:(NSInteger *)index{}
Run Code Online (Sandbox Code Playgroud) adb shell控制台是否可以使用其ID访问Android应用程序的特定按钮?还是文字?
我正在尝试自动按下设备上的按钮.这是从浏览器访问的Web应用程序.所以,如果我有那个按钮ID,我可以向该按钮发送动作吗?
我有一个UITableView与UIRefreshControl内侧限定viewDidLoad:的方法UIViewController如下:
- (void)viewDidLoad {
[super viewDidLoad];
self.refreshControl = [[UIRefreshControl alloc] init];
[self.refreshControl addTarget:self action:@selector(refreshMessages) forControlEvents:UIControlEventValueChanged];
UITableViewController *tableViewController = [[UITableViewController alloc] init];
tableViewController.tableView = self.messagesTableView;
tableViewController.refreshControl = self.refreshControl;
}
- (void)refreshMessages {
//load data items
if ([self.refreshControl isRefreshing]) {
[self.refreshControl endRefreshing];
}
[self.messagesTableView reloadData];
}
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我使用自定义单元格来更新单元格数据.在重新加载数据时UITableView闪烁.有办法避免这种情况吗?
编辑
我已将视频文件链接到示例演示.在UITableView重新加载数据,闪烁.我使用autolayout来更新动态单元格高度.
以下是可以重新创建此问题的示例代码.应该拉UITableView刷新.表视图在主队列上重新加载.正在使用自动布局调整单元格的大小.
objective-c uitableview uiviewcontroller ios uirefreshcontrol
我正在尝试创建以下格式的json字符串:
{
"cat_id" : 4992,
"brand" : "Toshiba",
"weight" : { "gte":1000000, "lt":1500000 },
"sitedetails" : {
"name" : "newegg.com",
"latestoffers" : {
"currency": "USD",
"price" : { "gte" : 100 }
}
}
}
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我用以下方法生成这个:
-(void)queryBuilderWithObj:(NSString *)object andKeyValue:(NSString *)key{
NSLog(@"object %@ and key %@",object,key);
if([key rangeOfString:@","].location == NSNotFound){
[querybuild setObject:object forKey:key];
}else{
NSArray *tempArray = [key componentsSeparatedByString:@","];
int index = tempArray.count - 1;
NSMutableDictionary *tempDict = [[NSMutableDictionary alloc] init];
while (index) {
if (index == tempArray.count - 1) { …Run Code Online (Sandbox Code Playgroud) 我知道对于Python <3,字符串'Plants vs. Zombies‰2'的unicode编码如下:
u"Plants vs. Zombies䋢 2".encode("utf-8")
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如果我有一个变量(比如appName)而不是字符串,我可以这样做:
appName = "Plants vs. Zombies䋢 2"
u+appName.encode("utf-8")
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对于:
appName = appName.encode('utf-8');
'ascii' codec can't decode byte 0xe4 in position 18: ordinal not in range(128)
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