Instant Run Throw Dexindexoverflowexception

When targetSdkVersion is set below 21 in my project, gradle build works fine and project runs properly. Here is build.gradle file: defaultConfig { applicationId 'com.air'

Solution 1:

Instant Run pushes updated code and resources to your connected device or emulator by performing a hot swap, warm swap, or cold swap. It automatically determines the type of swap to perform based on the type of change you made.

https://developer.android.com/studio/run/index.html#instant-run

Solution 2:

Instead of building a new APK, it pushes just those new changes and, in some cases, the app doesn't even need to restart but immediately shows the effect of those code changes.

Instant Run pushes updated code and resources to your connected device or emulator by performing a hot swap, warm swap, or cold swap.

https://developer.android.com/studio/run/index.html

Solution 3:

It enables fast development by not requiring a full build and redeployment of the apk every time you make a change to your app's code. It pushes only the changes made and makes them available instantly.

There are three types of swaps - HOT, WARM and COLD. (In increasing order of time taken to reflect changes)

HOT SWAPS are triggered when

Change implementation code of an existing instance method or static method

WARM SWAPS are triggered when

Change or remove an existing resource

COLD SWAPS are triggered when

Structural code changes

To understand the exact behavior and different scenarios refer the official documentation