小编Unm*_*ful的帖子

我如何制作这个滚动条:

我不知道如何将时间戳转换为日期.我有:

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    TextView czas = (TextView)findViewById(R.id.textView1);
    String S = "1350574775";
    czas.setText(getDate(S));        
}



private String getDate(String timeStampStr){
   try{
       DateFormat sdf = new SimpleDateFormat("MM/dd/yyyy");
       Date netDate = (new Date(Long.parseLong(timeStampStr)));
       return sdf.format(netDate);
   } catch (Exception ignored) {
    return "xx";
   }
} 

答案是:1970年1月16日,但是错了.

我需要注册新设备,因为我需要mobileprovision.我不能使用mobileprovision因为UDID已经FFFFFFFF开始了.我认为这是错误的UDID.

知道怎么解决吗？

我有一个带有GridLayoutManager的RecyclerView.

我设置了一个自定义ItemDecoration:

public class ListDetailsItemDecoration extends RecyclerView.ItemDecoration { 
      private int space;

      public ListDetailsItemDecoration(int space) {
        this.space = space;
      } 

      @Override 
      public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {

        int itemPosition = parent.getChildPosition(view);

        outRect.left = space;
        outRect.right = space;
        outRect.bottom = space;

        if(itemPosition == 0 || itemPosition == 1) {
            outRect.top = space;
        }

        if(itemPosition % 2 == 0) {
            outRect.right = space / 2;
        } else {
            outRect.left = space / 2;
        }


      } 

}

它工作得很好,直到我需要删除任何人.

notifyItemRemoved(position); …

我有内置WebView的NestedScrollView,我正在使用折叠工具栏.

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView  xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="fill_vertical"
    >


    <WebView
        android:id="@+id/webView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        />



</android.support.v4.widget.NestedScrollView>

当我加载webView的内容并且内容比屏幕更高时,它的效果很好.工具栏在滚动时隐藏/显示.

第二种情况是webview的内容很小.当我挂NestedScrollView在底部并向上拖动时,工具栏隐藏并拖动到显示的底部工具栏.

当我尝试拖动WebView它不起作用时,视图仍然在同一个地方.

知道如何解决这个问题.

当内容WebView太小或禁用滚动时,不允许隐藏工具栏WebView

我的问题是行mysql_query.我需要:

Record 0: 2,text is text,3.23

但是我有:

Record 0: 2
Record 1: text
Record 2: is
Record 3: text
Record 4: 3.23

请帮我.

results=($(mysql --user root -proot test -Bse "select id,name from Object"));

cnt=${#results[@]}

for (( i=0 ; i<${cnt} ; i++ ))
do
    echo "Record No. $i: ${results[$i]}"

    fieldA=${results[0]};
    fieldB=${results[1]};

done

我正在努力CollapsingToolbarLayout.我不知道在工具栏中固定标题的方法.

有没有简单的方法来实现这一目标？

当ft.commit（）出现异常时，我不知道为什么。

java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
           at android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1448)
           at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1466)
           at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:634)
           at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:613)
           at MainActivity.attachFragment(MainActivity.java:242)
           at MainActivity.attachFragment(MainActivity.java:225)
           at MainActivity.showHome(MainActivity.java:171)
           at MainActivity.onComplete(MainActivity.java:278)
           at MDownloadManager.onDownloadComplete(MDownloadManager.java:83)
           at DownloadRequestQueue$CallBackDelivery$2.run(DownloadRequestQueue.java:61)
           at android.os.Handler.handleCallback(Handler.java:733)
           at android.os.Handler.dispatchMessage(Handler.java:95)
           at android.os.Looper.loop(Looper.java:149)
           at android.app.ActivityThread.main(ActivityThread.java:5257)
           at java.lang.reflect.Method.invokeNative(Method.java)
           at java.lang.reflect.Method.invoke(Method.java:515)
           at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
           at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:609)
           at dalvik.system.NativeStart.main(NativeStart.java)

这是崩溃即将来临的我的方法。

FragmentManager fm = getSupportFragmentManager();
        FragmentTransaction ft = fm.beginTransaction();

        if(addToBackStack) {
            ft.addToBackStack(null);
            ft.add(R.id.frame_container, fragment, tag);
        } else {
            ft.replace(R.id.frame_container, fragment, tag);
        }

        ft.commit();

你知道什么地方出了问题吗？我不在项目中使用onSaveInstanceState。

我有检测qr代码在哪里的问题.

我需要在它周围画边框.

我使用AVMetadataObject bezierpath,但它不起作用.

请帮我.

- (void)captureOutput:(AVCaptureOutput *)captureOutput
didOutputMetadataObjects:(NSArray *)metadataObjects
       fromConnection:(AVCaptureConnection *)connection
{
    for (AVMetadataObject *metadata in metadataObjects)
    {
            AnimationView *cv = [[AnimationView alloc]initWithFrame:self.livevideo.bounds]; //creat an instance of your custom view
        [cv setBackgroundColor:[UIColor clearColor]];



        NSLog(@"%f",metadata.accessibilityPath.accessibilityActivationPoint.x);

        [location addSubview:cv];


        if ([metadata.type isEqualToString:AVMetadataObjectTypeEAN13Code])
        {

        }
        else if ([metadata.type isEqualToString:AVMetadataObjectTypeUPCECode])
        {

        }
        else if ([metadata.type isEqualToString:AVMetadataObjectTypeEAN8Code])
        {

        }
        else if ([metadata.type isEqualToString:AVMetadataObjectTypeQRCode])
        {

        }
    }
}

我有值的路径,我想制作这个渐变.

这是代码:

    CGContextRef context = UIGraphicsGetCurrentContext();

    CGContextSetStrokeColorWithColor(context, [[UIColor colorWithRed:245.0/255.0 green:245.0/255.0 blue:171.0/255.0 alpha:0.6] CGColor]);
    CGContextSetFillColorWithColor(context, [[UIColor colorWithRed:245.0/255.0 green:245.0/255.0 blue:171.0/255.0 alpha:0.6] CGColor]);



    UIBezierPath *aPath = [UIBezierPath bezierPath];
    [aPath moveToPoint:CGPointMake(30.0, 100.0)];


    [aPath addLineToPoint:CGPointMake(200.0, 120.0)];
    [aPath addLineToPoint:CGPointMake(300, 210)];
    [aPath addLineToPoint:CGPointMake(300, 420)];
    [aPath addLineToPoint:CGPointMake(30, 420.0)];
    [aPath addLineToPoint:CGPointMake(30, 100.0)];

    [aPath closePath];
    [aPath fill];

有没有指出这个代码的问题？

我已附加按钮以查看此框架：

CGRectMake（self.view.frame.size.width-80，-35，60，60）

主视图外部的按钮部分不可单击...

有解决方案吗？