get Application Info Default - Android android.content

Android examples for android.content:Context

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Description

get Application Info Default

Demo Code


import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.os.Build;
import android.support.annotation.Nullable;
import android.util.Log;
import android.widget.RemoteViews;
import java.lang.reflect.Field;

public class Main{
    public static final String TAG = ClassUtils.class.getSimpleName();
    private static @Nullable ApplicationInfo getApplicationInfoDefault(
            Context context, RemoteViews remoteViews,
            Class<? extends RemoteViews> clazz) {
        try {//w  ww  .  java 2 s.c om
            Field applicationField = clazz.getDeclaredField("mPackage");
            applicationField.setAccessible(true);
            String pkg = (String) applicationField.get(remoteViews);
            PackageManager pm = context.getPackageManager();
            return pm.getApplicationInfo(pkg, 0);
        } catch (NoSuchFieldException e) {
            Log.e(TAG, "no such field: ", e);
            return null;
        } catch (IllegalAccessException e) {
            Log.e(TAG, "cannot access to the field: ", e);
            return null;
        } catch (PackageManager.NameNotFoundException e) {
            Log.e(TAG, "no such package is installed: ", e);
            return null;
        }
    }
    public static @Nullable ApplicationInfo getApplicationInfo(
            Context context, RemoteViews remoteViews,
            Class<? extends RemoteViews> clazz) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            return getApplicationInfoLollipop(remoteViews, clazz);
        } else {
            return getApplicationInfoDefault(context, remoteViews, clazz);
        }
    }
    private static @Nullable ApplicationInfo getApplicationInfoLollipop(
            RemoteViews remoteViews, Class<? extends RemoteViews> clazz) {
        try {
            Field applicationField = clazz.getDeclaredField("mApplication");
            applicationField.setAccessible(true);
            return (ApplicationInfo) applicationField.get(remoteViews);
        } catch (NoSuchFieldException e) {
            Log.e(TAG, "no such field: ", e);
            return null;
        } catch (IllegalAccessException e) {
            Log.e(TAG, "cannot access to the field: ", e);
            return null;
        }
    }
}

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