我有一个UIView和我这样设置背景图像:
self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"sfond-appz.png"]];
我的问题是背景图像不在视图中居中,但它会重放一些时间来填充所有视图.有没有办法将图像置于uiview内部并将scretch设置为具有屏幕尺寸？
注意:我不能UIImageView用于背景因为我有scrollview.
我正在将Tomcat 7中的webapp移植到另一台使用Tomcat 7但使用Java 8的服务器上.
Tomcat成功启动但在日志中catalina.out我得到:
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 15
at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:131)
at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:60)
at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:209)
at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:119)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2049)
at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1931)
at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1899)
at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1885)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1281)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:855)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:346)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5172)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:618)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1100)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1618)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
可能是什么问题呢？
我正在开发一个Android应用程序,我必须支持所有不同的屏幕尺寸和密度.所以我为布局创建了不同的文件夹:layout-small layout-large和layout.
然后我为图像创建了不同的文件夹:ldpi, mdpi和hdpi.在所有可绘制文件夹中,图像必须具有不同的大小？我问这个原因我有一个屏幕尺寸大且密度适中的手机,显示的图像会更小而且尺寸不合适？
我正在使用javax.mail开发客户端邮件来读取邮箱内的邮件:
Properties properties = System.getProperties();
properties.setProperty("mail.store.protocol", "imap");
try {
Session session = Session.getDefaultInstance(properties, null);
Store store = session.getStore("pop3");//create store instance
store.connect("pop3.domain.it", "mail.it", "*****");
Folder inbox = store.getFolder("inbox");
FlagTerm ft = new FlagTerm(new Flags(Flags.Flag.SEEN), false);
inbox.open(Folder.READ_ONLY);//set access type of Inbox
Message messages[] = inbox.search(ft);
String mail,sub,bodyText="";
Object body;
for(Message message:messages) {
mail = message.getFrom()[0].toString();
sub = message.getSubject();
body = message.getContent();
//bodyText = body.....
}
} catch (Exception e) {
System.out.println(e);
}
我知道该方法getContent()返回一个对象,因为内容可能是a String,a MimeMultiPart,a SharedByteArrayInputstream和其他(我认为)......有没有办法在消息正文中获取文本？谢谢!!
我正在尝试将一些HTML转换为pdf.在一些谷歌搜索后,我发现dompdf,但当我尝试转换我检索
PHP-font-lib must either be installed via composer or copied to lib/php-font-lib
这就是我想要做的:
require 'pdf/dompdf.php';
$dompdf = new DOMPDF();
$dompdf->load_html($html);
$dompdf->render();
$dompdf->stream("sample.pdf");
我怎么解决？谢谢!
我有这个代码用电影显示gif图像.
public class GIFView extends View{
private Movie movie;
private InputStream is;
private long moviestart;
public GIFView(Context context) {
super(context);
is=getResources().openRawResource(R.drawable.anim_cerca);
movie=Movie.decodeStream(is);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
long now=android.os.SystemClock.uptimeMillis();
if (moviestart == 0)
moviestart = now;
int relTime = (int)((now - moviestart) % movie.duration());
movie.setTime(relTime);
movie.draw(canvas,10,10);
this.invalidate();
}
}
当gif加载时,我的问题就出现了,它画得非常糟糕,只显示了第一帧,而另一帧则被打扰了.我能做什么？
编辑:问题是模拟器!它不会显示GIF,但设备它没关系!:)
我正在尝试使用MBProgressHUD.我在项目中添加了标题.m,在类中导入了标题,并以这种方式从ibaction调用MBProgressHUD:
-(IBAction)submitForm:(id)sender{
MBProgressHUD *HUD = [[MBProgressHUD alloc] initWithView:self.view];
[self.view addSubview:HUD];
HUD.labelText = @"Connecting";
[HUD show:YES];
}
当我构建项目时,它发生了一个错误:
Undefined symbols for architecture armv7:
"_OBJC_CLASS_$_MBProgressHUD", referenced from:
objc-class-ref in FormViewController.o
ld: symbol(s) not found for architecture armv7
collect2: ld returned 1 exit status
我该如何解决？你能帮助我吗？
我正在开发一个带有a RelativeLayout和WebView内部的简单android应用程序.
我必须检测从底部到顶部的滑动仅在屏幕左侧的20%处完成.因此,当用户从底部到顶部在该空间中滑动时,我必须显示自定义对话框.
我尝试的是:
import android.app.Activity;
import android.view.MotionEvent;
import android.view.View;
public class ActivitySwipeDetector implements View.OnTouchListener {
static final String logTag = "ActivitySwipeDetector";
private Activity activity;
static final int MIN_DISTANCE = 100;
private float downY, upY;
public ActivitySwipeDetector(Activity activity){
this.activity = activity;
}
public void onRightToLeftSwipe(){
}
public void onLeftToRightSwipe(){
}
public void onTopToBottomSwipe(){
}
public void onBottomToTopSwipe(){
System.out.println("BOTTOM TO TOP SWIPE DONE!");
}
public boolean onTouch(View v, MotionEvent event) {
switch(event.getAction()){
case MotionEvent.ACTION_DOWN: {
downY = event.getY(); …我用这个代码调整了两个因素的图像大小.它有效,但调整大小后图像质量非常糟糕!你能帮助我吗？
这是代码
public class ImageTest {
private static final int factor1 = 3;
private static final int factor2 = 4;
public static void main(String [] args){
JFileChooser cs = new JFileChooser();
cs.setFileSelectionMode(cs.DIRECTORIES_ONLY);
int i = cs.showOpenDialog(null);
if(i==cs.APPROVE_OPTION){
File f = cs.getSelectedFile();
File[] ff = f.listFiles();
for(int j=0;j<ff.length;j++){
String end = ff[j].getName().substring(ff[j].getName().indexOf(".")+1);
System.out.println(end);
try{
BufferedImage originalImage = ImageIO.read(ff[j]);
int type = originalImage.getType() == 0? BufferedImage.TYPE_INT_ARGB : originalImage.getType();
BufferedImage resizeImageJpg = resizeImageWithHint(originalImage, type);
ImageIO.write(resizeImageJpg, end, new File("pr/"+ff[j].getName()));
}catch(IOException e){
e.printStackTrace();
}
} …我想在一条UIAlertView消息中添加一个url的可点击链接.这样,当用户看到警报视图时,他们可以触摸消息内的链接.或者,他们可以通过单击"确定"按钮进入下一步.
有可能吗？怎么样？