size

How to check an Android device is HDPI screen or MDPI screen?

由 穿精又带淫゛_ 提交于 2019-12-17 05:22:20
问题 I want to check this to fetch different images by internet. How to do that? 回答1: density = getResources().getDisplayMetrics().density; // return 0.75 if it's LDPI // return 1.0 if it's MDPI // return 1.5 if it's HDPI // return 2.0 if it's XHDPI // return 3.0 if it's XXHDPI // return 4.0 if it's XXXHDPI 回答2: You can check the screen density with: switch (getResources().getDisplayMetrics().densityDpi) { case DisplayMetrics.DENSITY_LOW: // ... break; case DisplayMetrics.DENSITY_MEDIUM: // ...

Why does my app size on device differ than the APK or Play store size

由 半腔热情 提交于 2019-12-17 05:11:59
问题 I have a quite valid question from a user which I'm unable to get to the bottom of trying to understand why the size reported on Google Play store is different than the size reported on the device. My signed release APK size on my PC comes in at 3.8MB. Uploading to Google Play shows a similiar size. Looking at the app manager on the device however shows the following stats: Total: 6.62MB App: 6.51MB Data: 112KB This is not to do with Google Play enabled copy protection (as other similar

Size of font in CSS with slash

由 喜你入骨 提交于 2019-12-17 03:37:29
问题 What does the slash mean here: font: 100%/120%; 回答1: This actually sets two properties and is equivalent to: font-size: 100%; line-height: 120%; To quote the official documentation: The syntax of this property is based on a traditional typographical shorthand notation to set multiple properties related to fonts. As David M said in the comments, it mirrors the typesetting tradition of specifying typeface sizes as “ x  pt on y  pt” to denote the glyph size on line height. But the example in

Size of font in CSS with slash

由 两盒软妹~` 提交于 2019-12-17 03:37:09
问题 What does the slash mean here: font: 100%/120%; 回答1: This actually sets two properties and is equivalent to: font-size: 100%; line-height: 120%; To quote the official documentation: The syntax of this property is based on a traditional typographical shorthand notation to set multiple properties related to fonts. As David M said in the comments, it mirrors the typesetting tradition of specifying typeface sizes as “ x  pt on y  pt” to denote the glyph size on line height. But the example in

ImageView be a square with dynamic width?

由 本小妞迷上赌 提交于 2019-12-17 02:44:10
问题 I have a GridView with ImageViews inside. I have 3 of them for each row. I can set correctly the width with WRAP_CONTENT and scaleType = CENTER_CROP, but I don't know how to set the ImageView's size to be a square. Here's what I did until now, it seems to be ok except the height, that is "static": imageView = new ImageView(context); imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); imageView.setLayoutParams(new GridView.LayoutParams(GridView.LayoutParams.WRAP_CONTENT, 300)); I'm doing

C pointers : pointing to an array of fixed size

由 不问归期 提交于 2019-12-17 02:18:12
问题 This question goes out to the C gurus out there: In C, it is possible to declare a pointer as follows: char (* p)[10]; .. which basically states that this pointer points to an array of 10 chars. The neat thing about declaring a pointer like this is that you will get a compile time error if you try to assign a pointer of an array of different size to p. It will also give you a compile time error if you try to assign the value of a simple char pointer to p. I tried this with gcc and it seems to

C pointers : pointing to an array of fixed size

由 你说的曾经没有我的故事 提交于 2019-12-17 02:18:11
问题 This question goes out to the C gurus out there: In C, it is possible to declare a pointer as follows: char (* p)[10]; .. which basically states that this pointer points to an array of 10 chars. The neat thing about declaring a pointer like this is that you will get a compile time error if you try to assign a pointer of an array of different size to p. It will also give you a compile time error if you try to assign the value of a simple char pointer to p. I tried this with gcc and it seems to

Set variable text column width in printf

由 ＊爱你＆永不变心＊ 提交于 2019-12-17 01:45:27
问题 In order to determine the size of the column in C language we use %<number>d . For instance, I can type %3d and it will give me a column of width=3. My problem is that my number after the % is a variable that I receive, so I need something like %xd (where x is the integer variable I received sometime before in my program). But it's not working. Is there any other way to do this? 回答1: You can do this as follows: printf("%*d", width, value); From Lee's comment: You can also use a * for the

[Python]读写文件方法

由 痞子三分冷 提交于 2019-12-17 01:36:45
1.open 使用open打开文件后一定要记得调用文件对象的close()方法。比如可以用try/finally语句来确保最后能关闭文件。 file_object = open( ' thefile.txt ' ) try : all_the_text = file_object.read( ) finally : file_object.close( ) 注：不能把open语句放在try块里，因为当打开文件出现异常时，文件对象file_object无法执行close()方法。 2.读文件 读文本文件 input = open( ' data ' , ' r ' ) # 第二个参数默认为r input = open( ' data ' ) 读固定字节 file_object = open( ' abinfile ' , ' rb ' ) try : while True: chunk = file_object.read( 100 ) if not chunk: break do_something_with(chunk) finally : file_object.close( ) 读每行 list_of_all_the_lines = file_object.readlines( ) 如果文件是文本文件，还可以直接遍历文件对象获取每行： for line in file

Size vs Size On Disk

由 痴心易碎 提交于 2019-12-16 18:03:28
问题 I read about the byte vs cluster theory, but I don't think it can apply in my case; Doesn't seem to have to do with "a bunch of small files"; . ├── [ 11K] 2ndVisit_Checklist.xlsx ├── [ 35K] 2ndVisit FTS_Timetable.xlsx ├── [ 34K] 2ndVisit_Roomlist.pdf ├── [ 27K] 2ndVisit_Teilnehmer.xlsx ├── [9.5K] Belgian Pupils for European Parliament.xlsx ├── [4.0K] Brussel EU │ ├── [ 64K] Checkliste.doc │ ├── [144K] Plan A73.doc │ ├── [ 38K] TN Liste EP.docx │ └── [108K] TN Liste EP V02.doc ├── [ 12K]
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