The problem that the number of Android methods exceeds 64K

Reprint: http://blog.csdn.net/wblyuyang/article/details/51813501

In fact, I have heard about the problem of 64K for a long time, but I think that the current project is relatively small, so there should be no such problem. I think the direct cause of this problem should be the three jar packages integrated into the Gaode map: 309KB, 377KB, and 474KB. Then one day, the problem of 64K was suddenly prompted. At first, I deleted two useless jar packages. After three days, it appeared again. The following is the prompt of Android studio:

Error:The number of method references in a .dex file cannot exceed 64K. 
Learn how to resolve this issue at https://developer.android.com/tools/building/multidex.html

Not only the cause of the error, but also the solution is given: https://developer.android.com/tools/building/multidex.html
This document explains the reason, solution and optimization plan for this error, it is worth seeing . 
The solution is also very simple, two steps: 
* Add multiDexEnabled true in build.gradle

    defaultConfig {
        ...
        minSdkVersion 14
        targetSdkVersion 21
        ...

        // Enabling multidex support.
        multiDexEnabled true
    }

• Rewrite the attachBaseContext method in the application

    @Override
    protected void attachBaseContext(Context base) {
        super.attachBaseContext(base);
        MultiDex.install(this);
    }

problem solved.