Implement requesting permission for using the GC Wii U Adapter.

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/activities/EmulationActivity.java

@@ -3,7 +3,9 @@ package org.dolphinemu.dolphinemu.activities;
 import android.app.Activity;
 import android.app.ActivityOptions;
 import android.app.Fragment;
+import android.content.Context;
 import android.content.Intent;
+import android.hardware.usb.UsbManager;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
@@ -30,6 +32,7 @@ import org.dolphinemu.dolphinemu.fragments.MenuFragment;
 import org.dolphinemu.dolphinemu.fragments.SaveStateFragment;
 import org.dolphinemu.dolphinemu.ui.main.MainPresenter;
 import org.dolphinemu.dolphinemu.utils.Animations;
+import org.dolphinemu.dolphinemu.utils.Java_GCAdapter;
 import org.dolphinemu.dolphinemu.utils.Log;
 
 import java.util.List;
@@ -115,6 +118,8 @@ public final class EmulationActivity extends AppCompatActivity
 
 		setTheme(themeId);
 		super.onCreate(savedInstanceState);
+		Java_GCAdapter.our_activity = this;
+		Java_GCAdapter.manager = (UsbManager) getSystemService(Context.USB_SERVICE);
 
 		// Picasso will take a while to load these big-ass screenshots. So don't run
 		// the animation until we say so.

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/services/USBPermService.java

@@ -0,0 +1,14 @@
+package org.dolphinemu.dolphinemu.services;
+
+import android.app.IntentService;
+import android.content.Intent;
+
+public final class USBPermService extends IntentService
+{
+	public USBPermService() { super("USBPermService"); }
+
+	// Needed when extending IntentService.
+	// We don't care about the results of the intent handler for this.
+	@Override
+	protected void onHandleIntent(Intent intent) {}
+}

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/utils/Java_GCAdapter.java

@@ -1,6 +1,9 @@
 package org.dolphinemu.dolphinemu.utils;
 
 import android.app.Activity;
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
 import android.hardware.usb.UsbConfiguration;
 import android.hardware.usb.UsbConstants;
 import android.hardware.usb.UsbDevice;
@@ -9,8 +12,11 @@ import android.hardware.usb.UsbEndpoint;
 import android.hardware.usb.UsbInterface;
 import android.hardware.usb.UsbManager;
 
+import org.dolphinemu.dolphinemu.services.USBPermService;
+
 import java.util.HashMap;
 import java.util.Iterator;
+import java.util.Map;
 
 public class Java_GCAdapter {
 	public static UsbManager manager;
@@ -23,6 +29,26 @@ public class Java_GCAdapter {
 	static UsbEndpoint usb_in;
 	static UsbEndpoint usb_out;
 
+	private static void RequestPermission()
+	{
+		HashMap<String, UsbDevice> devices = manager.getDeviceList();
+		for (Map.Entry<String, UsbDevice> pair : devices.entrySet())
+		{
+			UsbDevice dev = (UsbDevice) pair.getValue();
+			if (dev.getProductId() == 0x0337 && dev.getVendorId() == 0x057e)
+			{
+				if (!manager.hasPermission(dev))
+				{
+					Intent intent = new Intent();
+					PendingIntent pend_intent;
+					intent.setClass(our_activity, USBPermService.class);
+					pend_intent = PendingIntent.getService(our_activity, 0, intent, 0);
+					manager.requestPermission(dev, pend_intent);
+				}
+			}
+		}
+	}
+
 	public static void Shutdown()
 	{
 		usb_con.close();
@@ -32,14 +58,16 @@ public class Java_GCAdapter {
 	public static boolean QueryAdapter()
 	{
 		HashMap<String, UsbDevice> devices = manager.getDeviceList();
-		Iterator it = devices.entrySet().iterator();
+		for (Map.Entry<String, UsbDevice> pair : devices.entrySet())
-		while (it.hasNext())
 		{
-			HashMap.Entry pair = (HashMap.Entry) it.next();
 			UsbDevice dev = (UsbDevice) pair.getValue();
 			if (dev.getProductId() == 0x0337 && dev.getVendorId() == 0x057e)
+			{
 				if (manager.hasPermission(dev))
 					return true;
+				else
+					RequestPermission();
+			}
 		}
 		return false;
 	}

Source/Core/InputCommon/GCAdapter_Android.cpp

@@ -35,7 +35,7 @@ static u8 s_controller_rumble[4];
 // Input handling
 static std::mutex s_read_mutex;
 static u8 s_controller_payload[37];
-static std::atomic<int> s_controller_payload_size;
+static std::atomic<int> s_controller_payload_size{0};
 
 // Output handling
 static std::mutex s_write_mutex;