android-studio

问题 I don't know why but sometime in Android Studio Editor, it shows vertical line as shown in screenshot below. Don't know about other editor but it happens in Android Studio. So why it is showing and how to hide it? 回答1: That line historically represents the margin of A4 paper, that is useful only if you need to print the code. Old school says that you should keep your code inside that margin, to guarantee much portability. But.. nowadays in the real life it makes no sense to me! Because we

问题 So I tried to make an app that plays Chess. However, for some reason, the first box on my gridview for my chessboard is blank (where the black Rook is) when the game starts. But once I make the first move, it appears with the black rook. Has anyone had an issue with GridView in Android Studio like this before? I will attach pictures below as well as my xml code for the chessboard screen and my code for the GridView. GridView Before First Move GridView After First Move <Button android:id="@+id

问题 So I tried to make an app that plays Chess. However, for some reason, the first box on my gridview for my chessboard is blank (where the black Rook is) when the game starts. But once I make the first move, it appears with the black rook. Has anyone had an issue with GridView in Android Studio like this before? I will attach pictures below as well as my xml code for the chessboard screen and my code for the GridView. GridView Before First Move GridView After First Move <Button android:id="@+id

问题 This question already has answers here : Where is Android Studio layout preview? (22 answers) Closed 2 months ago . I have updated my android studio to 3.6.1 . Everything looks so good but i could not found the xml files code to view. They have removed the left side corner options to view design / code of xml file. Now how can i see it? 回答1: They move the buttons in top right corner under the files opened. Now you have 3 options instead of 2! 回答2: Finally i found it. They have moved this

问题 This question already has answers here : Where is Android Studio layout preview? (22 answers) Closed 2 months ago . I have updated my android studio to 3.6.1 . Everything looks so good but i could not found the xml files code to view. They have removed the left side corner options to view design / code of xml file. Now how can i see it? 回答1: They move the buttons in top right corner under the files opened. Now you have 3 options instead of 2! 回答2: Finally i found it. They have moved this

问题 This question already has answers here : Where is Android Studio layout preview? (22 answers) Closed 2 months ago . I have updated my android studio to 3.6.1 . Everything looks so good but i could not found the xml files code to view. They have removed the left side corner options to view design / code of xml file. Now how can i see it? 回答1: They move the buttons in top right corner under the files opened. Now you have 3 options instead of 2! 回答2: Finally i found it. They have moved this

问题 sorry to ask a silly question here. Will all my project get erased if I update android studio to latest version? Thanks 回答1: Definitely not. You can update studio without worrying about it. 回答2: It will not delete any of your project, you can update it and don't worry ... 回答3: For the safety reason, recommend you copy your workspace first. 来源： https://stackoverflow.com/questions/33647969/update-android-studio-will-erase-all-my-project

问题 sorry to ask a silly question here. Will all my project get erased if I update android studio to latest version? Thanks 回答1: Definitely not. You can update studio without worrying about it. 回答2: It will not delete any of your project, you can update it and don't worry ... 回答3: For the safety reason, recommend you copy your workspace first. 来源： https://stackoverflow.com/questions/33647969/update-android-studio-will-erase-all-my-project

问题 sorry to ask a silly question here. Will all my project get erased if I update android studio to latest version? Thanks 回答1: Definitely not. You can update studio without worrying about it. 回答2: It will not delete any of your project, you can update it and don't worry ... 回答3: For the safety reason, recommend you copy your workspace first. 来源： https://stackoverflow.com/questions/33647969/update-android-studio-will-erase-all-my-project

问题 #include <jni.h> #include <string> #include <opencv2/opencv.hpp> using namespace cv; #include <iostream> extern "C" JNIEXPORT jstring JNICALL Java_com_example_cppinandroid_MainActivity_stringFromJNI( JNIEnv* env, jobject) { Mat image; image = imread( "/home/<name>/a.png", 1 ); if ( !image.data ) { return env->NewStringUTF( "No data in image!" ); } else { return env->NewStringUTF( "Data is in image" ); } } That's what I have in Native Cpp part of the android project. When I run the application