Android Emulator: Installation error: INSTALL_FAILED_VERSION_DOWNGRADE

Question

I am currently trying to compile and test a small Android Application.

I am using Eclipse, and have SDK 4.2 (Api Level 17) installed. I\'ve set

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Answer 1

According to sdk src code from ...\android-22\android\content\pm\PackageManager.java

/**
 * Installation return code: this is passed to the {@link IPackageInstallObserver} by
 * {@link #installPackage(android.net.Uri, IPackageInstallObserver, int)} if
 * the new package has an older version code than the currently installed package.
 * @hide
 */
public static final int INSTALL_FAILED_VERSION_DOWNGRADE = -25;

if the new package has an older version code than the currently installed package.