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文本文件读写助手：创建、追加一行、读最后一行、统计行数（附 .aia 源码）...
...样的相对路径，文件就落在 App 专属目录 /storage/emulated/0/Android/data/包名/files/notes/日记.txt：
不需要任何存储权限，Android 10 以后也能正常读写——「无法保存文件 / 无法创建文档」多半是写到了 /sdcard/xxx.txt 这种共享目录被系...
Difference between mkdir() and mkdirs() in java for java.io.File [closed]
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BroadcastReceiver with multiple filters or multiple BroadcastReceivers?
I have an Android Activity that needs to catch two different broadcasts. My current approach is to have a single BroadcastReceiver within the Activity and catch both the broadcasts with it:
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AI助手生成代码编译apk报错 - AI 助手 - 清泛IT社区，为创新赋能！
...r\resources\app.asar.unpacked\tmp\1781143258366_6476145339306496000-0\youngandroidproject\..\build\intermediates\res\merged\layout\abc_alert_dialog_button_bar_material.xml: note: using v22 attributes; synthesizing resource appinventor.ai_18721201607.BLtalka:layout/abc_alert_dialog_button_bar_materia...
How to convert TimeStamp to Date in Java?
...time functionality is back-ported to Java 6 & 7 in ThreeTen-Backport.
Android
Later versions of Android bundle implementations of the java.time classes.
For earlier Android, the ThreeTenABP project adapts ThreeTen-Backport (mentioned above). See How to use ThreeTenABP….
The ThreeTen-Extr...
Changing ImageView source
...mageDrawable(getResources().getDrawable(R.drawable.monkey));
*** With new android API 22 getResources().getDrawable() is now deprecated. This is an example how to use now:
myImgView.setImageDrawable(getResources().getDrawable(R.drawable.monkey, getApplicationContext().getTheme()));
and how to vali...
Get Bitmap attached to ImageView
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i get AppCompatImageView cannot be cast to android.graphics.drawable.BitmapDrawable
– Billyjoker
Apr 12 at 15:44
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A Java collection of value pairs? (tuples?)
...ese classes also allow null keys and null values, and are serializable.
Android
If you're writing for Android, just use Pair.create(key, value) to create an immutable pair.
Apache Commons
Apache Commons Lang provides the helpful Pair.of(key, value) to create an immutable, comparable, seriali...
What's the difference between CENTER_INSIDE and FIT_CENTER scale types?
...NTER:
CENTER_INSIDE does not enlarge the image, FIT_CENTER does.
The Android robot is reproduced or modified from work created and shared by Google and used according to terms described in the Creative Commons 3.0 Attribution License.
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Is there a way to get the source code from an APK file?
...ll)
Start: apktool decode [apk file]
Intermediate result: resource files, AndroidManifest.xml
unzip APK file with an unpacker of your choice
Intermediate result: classes.dex
download and extract dex2jar-0.0.9.15.zip from http://code.google.com/p/dex2jar/downloads/detail?name=dex2jar-0.0.9.15.zip&am...