Android Studio

Tips and Tricks

• Search for intellij for help if not found
• Import Sample if struggling
• Right Click generate getters and setters (Goto coding styles to set m_, s for statics)
• Use blue arrow to run to cursor when debugging
• Lighting bolt applies changes to reduce restart
• LHS in debug is a structure tab to should locals
• Wrap logcat using soft wrap
• Right-click build and select project structure to change build

Issue with SdkManager

Problem

sdkmanager
Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
	at com.android.repository.api.SchemaModule$SchemaModuleVersion.<init>(SchemaModule.java:156)
	at com.android.repository.api.SchemaModule.<init>(SchemaModule.java:75)
	at com.android.sdklib.repository.AndroidSdkHandler.<clinit>(AndroidSdkHandler.java:81)
	at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:73)
	at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:48)
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.annotation.XmlSchema
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
	... 5 more

Resolution

Make sure you have Java 11 (probably the cause)

sudo update-alternatives --config java
// Select /usr/lib/jvm/java-11-openjdk-amd64/bin/java

Fix it by

cd ~/Android/Sdk/tools
mkdir jaxb_lib
wget https://repo1.maven.org/maven2/javax/activation/activation/1.1.1/activation-1.1.1.jar -O jaxb_lib/activation.jar
wget https://repo1.maven.org/maven2/com/sun/xml/bind/jaxb-impl/2.3.3/jaxb-impl-2.3.3.jar -O jaxb_lib/jaxb-impl.jar
wget https://repo1.maven.org/maven2/com/sun/istack/istack-commons-runtime/3.0.11/istack-commons-runtime-3.0.11.jar -O jaxb_lib/istack-commons-runtime.jar
wget https://repo1.maven.org/maven2/org/glassfish/jaxb/jaxb-xjc/2.3.3/jaxb-xjc-2.3.3.jar -O jaxb_lib/jaxb-xjc.jar
wget https://repo1.maven.org/maven2/org/glassfish/jaxb/jaxb-core/2.3.0.1/jaxb-core-2.3.0.1.jar -O jaxb_lib/jaxb-core.jar
wget https://repo1.maven.org/maven2/org/glassfish/jaxb/jaxb-jxc/2.3.3/jaxb-jxc-2.3.3.jar -O jaxb_lib/jaxb-jxc.jar
wget https://repo1.maven.org/maven2/javax/xml/bind/jaxb-api/2.3.1/jaxb-api-2.3.1.jar -O jaxb_lib/jaxb-api.jar
# Append jaxb_lib to the CLASSPATH in sdkmanager and avdmanager
sed -ie 's%^CLASSPATH=.*%\0:$APP_HOME/jaxb_lib/*%' bin/sdkmanager bin/avdmanager

Set up .bashrc

export ANDROID_HOME=$HOME/Android/Sdk
export PATH=$PATH:$ANDROID_HOME/emulator
export PATH=$PATH:$ANDROID_HOME/tools
export PATH=$PATH:$ANDROID_HOME/tools/bin
export PATH=$PATH:$ANDROID_HOME/platform-tools
export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64