Interceptor.java

package com.alorma.github;

import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Parcelable;
import java.util.ArrayList;
import java.util.List;

public class Interceptor extends Activity {

  private Intent failIntent;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    createFailIntent();

    if (getIntent().getAction().equals(Intent.ACTION_VIEW)) {
      Uri uri = getIntent().getData();

      if (uri != null) {
        Intent intent = new IntentsManager(this).checkUri(uri);
        if (intent != null) {
          startActivity(intent);
          finish();
        } else {
          fail();
        }
      } else {
        fail();
      }
    } else {
      fail();
    }
  }

  private void fail() {
    try {
      if (failIntent != null) {
        startActivity(failIntent);
        finish();
      } else {
        startActivity(onFail());
        finish();
      }
    } catch (Exception e) {
      e.printStackTrace();
      finish();
    }
  }

  private void createFailIntent() {
    new AsyncTask<Void, Void, Intent>() {

      @Override
      protected Intent doInBackground(Void... params) {
        return onFail();
      }

      @Override
      protected void onPostExecute(Intent intent) {
        super.onPostExecute(intent);
        Interceptor.this.failIntent = intent;
      }
    }.execute();
  }

  private Intent onFail() {
    if (failIntent == null && getIntent() != null) {
      return generateFailIntentWithoutGitskarios();
    } else {
      return failIntent;
    }
  }

  private Intent generateFailIntentWithoutGitskarios() {
    try {
      Intent intent = new Intent(getIntent().getAction());
      intent.setData(getIntent().getData());
      intent.addCategory(Intent.CATEGORY_BROWSABLE);
      intent.addCategory(Intent.CATEGORY_DEFAULT);

      List<ResolveInfo> resolveInfos = getPackageManager().queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);

      if (!resolveInfos.isEmpty()) {
        List<Intent> targetedShareIntents = new ArrayList<Intent>();

        for (ResolveInfo resolveInfo : resolveInfos) {
          String packageName = resolveInfo.activityInfo.packageName;
          if (!packageName.equals(getPackageName())) {
            Intent targetedShareIntent = new Intent(getIntent().getAction());
            targetedShareIntent.setData(getIntent().getData());
            targetedShareIntent.setPackage(packageName);
            targetedShareIntents.add(targetedShareIntent);
          }
        }

        Intent chooserIntent = Intent.createChooser(targetedShareIntents.remove(0), "Open with...");
        if (targetedShareIntents.size() > 0) {
          chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, targetedShareIntents.toArray(new Parcelable[targetedShareIntents.size()]));
        }

        return chooserIntent;
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
    return failIntent;
  }
}