AddonInstallReceiver.java

package net.zhuoweizhang.mcpelauncher;

import net.zhuoweizhang.mcpelauncher.ui.MainMenuOptionsActivity;
import android.content.*;
import android.content.pm.*;

import com.mojang.minecraftpe.MainActivity;

/**
 * Handles package install events. 
 * When an addon is installed or removed, restart the Dalvik VM so the app can load/unload the native library.
 * When Minecraft PE is updated, schedule a prepatching so that the new libminecraftpe can be patched.
 */
public class AddonInstallReceiver extends BroadcastReceiver {

        @Override
        public void onReceive(final Context context, final Intent intent) {
		System.out.println("MCPELauncher: " + intent.toString());
		System.out.println("Is lib loaded? " + MainActivity.libLoaded);
		String packageName = intent.getData().toString().substring(8);
		boolean isMinecraftUpdate = packageName.equals("com.mojang.minecraftpe");
		if (!MainActivity.libLoaded && !isMinecraftUpdate) return;
		if (MainMenuOptionsActivity.isManagingAddons) return;
		if (intent.getAction().equals(Intent.ACTION_PACKAGE_REMOVED) && intent.getBooleanExtra(Intent.EXTRA_REPLACING, false)) {
			return;
		}
		try {
			PackageManager pm = context.getPackageManager();
			System.out.println("MCPELauncher: " + packageName);
			if (isMinecraftUpdate) {
				System.out.println("Detected Minecraft PE upgrade");
				Utils.getPrefs(1).edit().putBoolean("force_prepatch", true).commit();
			} else if (!MainActivity.loadedAddons.contains(packageName)) { //is not currently loaded
				ApplicationInfo appInfo = pm.getApplicationInfo(packageName, PackageManager.GET_META_DATA);
				//appInfo.dump(new LogPrinter(4, "MCPELauncher"), "");
				if (appInfo.metaData == null) return;
				String nativeLibName = appInfo.metaData.getString("net.zhuoweizhang.mcpelauncher.api.nativelibname");
				if (nativeLibName == null) return;
			}
		} catch (Exception e) {
			e.printStackTrace();
			return;
		}
		System.out.println("Scheduling MCPELauncher restart");
		if (MainActivity.currentMainActivity != null && MainActivity.currentMainActivity.get() != null) {
			try {
				MainActivity.currentMainActivity.get().finish();
			} catch (Exception e) {
				e.printStackTrace(); //whatever, the VM's about to die anyways
			}
		}
		new Thread(new Runnable() {
			public void run() {
				try {
					Thread.sleep(200);
				} catch (Exception e) {}
				System.exit(0);
			}
		}).start();
	}
}