android-studio

问题 Following Jama Matrices are defined in my code: P: 3*3 Matrix I: 3*3 identity Matrix K: 3*2 Matrix H: 2*3 Matrix Q: 3*3 Matrix Following is my code snippet: private Matrix getP() { P= (I.minus(K.times(H))).times(Q); Log.d("csv", "P is calculated"); return P; } While running the code, at first iteration it works, i.e, P is calculated is printed at the Logcat. However, it happens only once and the application gets stopped. Following is the error: java.lang.IllegalArgumentException: Matrix inner

问题 I thought AS was the one primary supported environment when it comes to develop, so this is really unusual. Alt + Enter in Android Studio Flutter Plugin: v35.2.1 Dart Plugin: v183.6270 The very same project opened in VS Code , after reading this. Ctrl + . in VS Code Flutter Plugin: v.2.26.1 Dart Plugin: v2.26.1 Flutter: flutter --version Flutter 1.2.1 • channel stable • https://github.com/flutter/flutter.git Framework • revision 8661d8aecd (3 months ago) • 2019-02-14 19:19:53 -0800 Engine •

问题 Tried to show 3 notification in cluster format. As per the doc, I added the setGroupSummary(true) property for the first notification.But in the result i have got only two notification. The notification which is added the GroupSummary property is not visible. NotificationCompat.Builder firstNotification = createNotification(context,"1.Message","Here you go 1"); firstNotification .setGroupSummary(true); firstNotification .setGroup("KEY_NOTIFICATION_GROUP"); NotificationCompat.Builder

问题 Java File Show like below Before After Xml file show like below Before After I have tried clear Project, Rebuild Project, Restart/Invalidate, delete Build,.idea folders but its doesn't work. 回答1: I have tried below solution and its work for me. I have delete caches folder from C: Drive . C:\Users\admin\.AndroidStudio3.3\system\caches 来源： https://stackoverflow.com/questions/54823621/after-android-studio-update-suddenly-my-java-xml-file-changed

问题 Java File Show like below Before After Xml file show like below Before After I have tried clear Project, Rebuild Project, Restart/Invalidate, delete Build,.idea folders but its doesn't work. 回答1: I have tried below solution and its work for me. I have delete caches folder from C: Drive . C:\Users\admin\.AndroidStudio3.3\system\caches 来源： https://stackoverflow.com/questions/54823621/after-android-studio-update-suddenly-my-java-xml-file-changed

问题 I am trying to implement Butterknife into my android studio project. However when I do so I get an error on @InjectView "cannot resolve symbol InjectView". Have I not implemented Butterknife sucsessfully? Activity code: package com.example.rodf.testapp; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; public class MainActivity extends ActionBarActivity { @InjectView(R.id.tvHelloWorld) TextView tv1; @Override

问题 I'm working on Android Stuido to generate a signed certification, but from the New Key Store option, I need to create two passwords for this certification. Do you know where the difference between them is? 回答1: Keystore is a binary file that contains a set of private keys. Private key represents the entity to be identified with the app, such as a person or a company. So Keystore password is used to open a keystore and simple password is password of private entity stored in keystore file..!!

问题 I have two project A and B where B is added as a module of project A. I have added dependencies in A's Gradle build file. Now i can import B's class in A without any error (in editor) but can't build. Preferences is a class of project B. Error Error:(22, 23) error: cannot find symbol class Preferences A's build file apply plugin: 'com.android.application' android { compileSdkVersion 21 buildToolsVersion "21.0.0" defaultConfig { applicationId "com.example.A" minSdkVersion 9 targetSdkVersion 21

问题 Recently installed Android Studio 1.0.1 (old version for some reasons) on Ubuntu 15, and I am trying to create a new project. Whenever I build it I get this error Cannot run program "/home/user/Android/Sdk/build-tools/23.0.2/aapt": error=2 No such file or directory" The file exists there. 回答1: sudo apt-get install lib32stdc++6 lib32z1 回答2: please check your compileSdkVersion and buildToolsVersion and targetSdkVersion please same the value. simple : compileSdkVersion "23" buildToolsVersion "23

问题 Recently installed Android Studio 1.0.1 (old version for some reasons) on Ubuntu 15, and I am trying to create a new project. Whenever I build it I get this error Cannot run program "/home/user/Android/Sdk/build-tools/23.0.2/aapt": error=2 No such file or directory" The file exists there. 回答1: sudo apt-get install lib32stdc++6 lib32z1 回答2: please check your compileSdkVersion and buildToolsVersion and targetSdkVersion please same the value. simple : compileSdkVersion "23" buildToolsVersion "23