Android Studio

Setup Android Studio

System Requirements

• Microsoft® Windows® 8/7/Vista/2003 (32 or 64-bit).
• Mac® OS X® 10.8.5 or higher, up to 10.9 (Mavericks)
• GNOME or KDE desktop

Installation

Window

1. Download and install JDK (Java Development Kit) (opens new window) version 8
2. Download Android Studio (opens new window)
3. Launch Android Studio.exe then mention JDK path and download the latest SDK

Linux

1. Download and install JDK (Java Development Kit) (opens new window) version 8
2. Download Android Studio (opens new window)
3. Extract the zip file
4. Open terminal, cd to the extracted folder, cd to bin (example cd android-studio/bin)
5. Run ./studio.sh

View And Add Shortcuts in Android Studio

By going to Settings >> Keymap A window will popup showing All the Editor Actions with the their name and shortcuts. Some of the Editor Actions do not have shortcuts. So right click on that and add a new shortcut to that.
Check the image below

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Filter logs from UI

Android logs can be filtered directly from the UI. Using this code

public class MainActivity extends AppCompatActivity {
    private final static String TAG1 = MainActivity.class.getSimpleName();
    private final static String TAG2 = MainActivity.class.getCanonicalName();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Log.e(TAG1,"Log from onCreate method with TAG1");
        Log.i(TAG2,"Log from onCreate method with TAG2");
    }
}

If I use the regex TAG1|TAG2 and the level verbose I get

01-14 10:34:46.961 12880-12880/android.doc.so.thiebaudthomas.sodocandroid E/MainActivity: Log from onCreate method with TAG1
01-14 10:34:46.961 12880-12880/android.doc.so.thiebaudthomas.sodocandroid I/androdi.doc.so.thiebaudthomas.sodocandroid.MainActivity: Log from onCreate method with TAG2

(opens new window)

The level can be set to get logs with given level and above. For example the verbose level will catch verbose, debug, info, warn, error and assert logs.

Using the same example, if I set the level to error, I only get

01-14 10:34:46.961 12880-12880/androdi.doc.so.thiebaudthomas.sodocandroid E/MainActivity: Log from onCreate method with TAG1

(opens new window)

Create filters configuration

Custom filters can be set and save from the UI. In the AndroidMonitor tab, click on the right dropdown (must contains Show only selected application or No filters) and select Edit filter configuration.

Enter the filter you want

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And use it (you can selected it from the same dropdown)

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Important If you add an input in the filter bar, android studio will consider both your filter and your input.

With both input and filter there is no output (opens new window)

Without filter, there is some outputs (opens new window)

Custom colors of logcat message based on message importance

Go to File -> Settings -> Editor -> Colors & Fonts -> Android Logcat

Change the colors as you need:

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Choose the appropriate color:

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Enable/Disable blank line copy

ctrl + alt + shift + / (cmd + alt + shift + / on MacOS) should show you the following dialog:

(opens new window)

Clicking on Registry you will get

(opens new window)

The key you want to enable/disable is

editor.skip.copy.and.cut.for.empty.selection

Tested on Linux Ubuntu and MacOS.

Android Studio useful shortcuts

The following are some of the more common/useful shortcuts.

These are based on the default IntelliJ shortcut map. You can switch to other common IDE shortcut maps via File -> Settings -> Keymap -> <Choose Eclipse/Visual Studio/etc from Keymaps dropdown>

Action	Shortcut
Format code	CTRL + ALT + L
Add unimplemented methods	CTRL + I
Show logcat	ALT + 6
Build	CTRL + F9
Build and Run	CTRL + F10
Find	CTRL + F
Find in project	CTRL+SHIFT + F
Find and replace	CTRL + R
Find and replace in project	CTRL + SHIFT + R
Override methods	CTRL + O
Show project	ALT + 1
Hide project - logcat	SHIFT + ESC
Collapse all	CTRL + SHIFT + NumPad +
View Debug Points	CTRL + SHIFT + F8
Expand all	CTRL + SHIFT + NumPad -
Open Settings	ALT + s
Select Target (open current file in Project view)	ALT + F1 → ENTER
Search Everywhere	SHIFT → SHIFT (Double shift)
Code	Surround With
Create method form selected code	ALT + CTRL

Refactor:

Action	Shortcut
Refactor This (menu/picker for all applicable refactor actions of the current element)	Mac CTRL + T - Win/Linux CTRL + ALT + T
Rename	SHIFT + F6
Extract Method	Mac CMD + ALT + M - Win/Linux CTRL + ALT + M
Extract Parameter	Mac CMD + ALT + P - Win/Linux CTRL + ALT + P
Extract Variable	Mac CMD + ALT + V - Win/Linux CTRL + ALT + V

Android Studio Improve performance tip

Enable Offline Work:

1. Click File -> Settings. Search for "gradle" and click in Offline work box.
2. Go to Compiler (in same settings dialog just below Gradle) and add --offline to Command-line Options text box.

Improve Gradle Performance

Add following two line of code in your gradle.properties file.

org.gradle.daemon=true
org.gradle.parallel=true

Increasing the value of -Xmx and -Xms in studio.vmoptions file

-Xms1024m
-Xmx4096m
-XX:MaxPermSize=1024m
-XX:ReservedCodeCacheSize=256m
-XX:+UseCompressedOops

Window

%USERPROFILE%.{FOLDER_NAME}\studio.exe.vmoptions and/or %USERPROFILE%.{FOLDER_NAME}\studio64.exe.vmoptions

Mac

~/Library/Preferences/{FOLDER_NAME}/studio.vmoptions

Linux

~/.{FOLDER_NAME}/studio.vmoptions and/or ~/.{FOLDER_NAME}/studio64.vmoptions

Gradle build project takes forever

Android Studio -> Preferences -> Gradle -> Tick Offline work and then restart your Android studio.

Reference screenshot:

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Create assets folder

• Right click in MAIN folder > New > Folder > Assets Folder.
• Assets folder will be under MAIN folder with the same symbol as RES folder.
• In this example I put a font file. (opens new window)