: Compilers that convert Java bytecode into DEX (Dalvik Executable) files while performing code shrinking, obfuscation, and optimization. Build Tools vs. Platform Tools vs. SDK Tools
Mastering these tools will cut your compile‑wait time dramatically and make you the go‑to person when a teammate’s build breaks. android studio build tools
| Error | Likely cause | Fix | |--------|---------------|------| | Unable to find aapt2 | Missing Build Tools version | Install via SDK Manager or lower buildToolsVersion | | Duplicate class | Two libraries include same package | Run ./gradlew :app:dependencies to find conflict, use exclude | | Failed to apply plugin 'com.android.internal.version-check' | AGP and Gradle version mismatch | Check compatibility table | | OutOfMemoryError | Heap too small | In gradle.properties : org.gradle.jvmargs=-Xmx2048m | : Compilers that convert Java bytecode into DEX