DetailsActivity.java

package novoda.com.sandbox;

import android.app.Activity;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.support.annotation.IdRes;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

public class DetailsActivity extends Activity {

    private static final String ACTION = BuildConfig.APPLICATION_ID + ".DETAILS";
    private static final String EXTRA_PACKAGE_NAME = "extra_package_name";

    public static Intent createIntent(String packageName) {
        return new Intent(ACTION)
                .putExtra(EXTRA_PACKAGE_NAME, packageName);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_details);

        final String packageName = getIntent().getStringExtra(EXTRA_PACKAGE_NAME);

        try {
            ApplicationInfo applicationInfo = getPackageManager().getApplicationInfo(packageName, PackageManager.GET_META_DATA);
            Drawable drawable = applicationInfo.loadIcon(getPackageManager());

            ImageView logoView = (ImageView) findViewById(R.id.details_activity_application_logo);
            logoView.setImageDrawable(drawable);

            setItem("Name", applicationInfo.name, R.id.details_activity_application_name);
            setItem("Data dir", applicationInfo.dataDir, R.id.details_activity_data_directory);
            setItem("Package", applicationInfo.packageName, R.id.details_activity_package_name);
            setItem("Target Sdk", String.valueOf(applicationInfo.targetSdkVersion), R.id.details_activity_target_sdk);

            findViewById(R.id.details_activity_launch_application).setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Intent launchIntentForPackage = getPackageManager().getLaunchIntentForPackage(packageName);
                    if (launchIntentForPackage == null) {
                        Toast.makeText(DetailsActivity.this, "Uh oh, can't open this package!", Toast.LENGTH_SHORT).show();
                    } else {
                        startActivity(launchIntentForPackage);
                    }
                }
            });

        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
    }

    private void setItem(String keyName, String value, @IdRes int id) {
        TextView name = (TextView) findViewById(id);
        name.setText(keyName + " : " + value);
    }
}