CtxUtils.java
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package com.polysoft.nafmii.utils;
import android.app.Activity;
import android.app.Application;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.res.AssetManager;
import android.content.res.Resources;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
public class CtxUtils {
private static Application application;
public static void setApplication(Application application) {
CtxUtils.application = application;
}
public static Application getApplication() {
return CtxUtils.application;
}
public static AssetManager getAssetsManager() {
return getApplication().getAssets();
}
public static InputStream openAssetsFile(String fileName) throws IOException {
return getAssetsManager().open(fileName);
}
public static <T> T getSystemService(Class<T> c) {
return getApplication().getSystemService(c);
}
public static File getDownloadDir() {
return getApplication().getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS);
}
public static PackageInfo getPackageInfo() {
PackageManager manager = getApplication().getPackageManager();
String name = getApplication().getPackageName();
try {
return manager.getPackageInfo(name, 0);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return new PackageInfo();
}
public static String getAppName() {
ApplicationInfo info = getPackageInfo().applicationInfo;
if (null != info) {
try {
Resources resources = getApplication().getResources();
return resources.getString(info.labelRes);
} catch (Exception e) {
e.printStackTrace();
}
}
return "";
}
public static String getPackageName() {
return getApplication().getPackageName();
}
public static void installApk(Activity context, String downloadApk) {
Intent intent = new Intent(Intent.ACTION_VIEW);
File file = new File(downloadApk);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
Uri apkUri = FileProviderUtils.getUriForFile(context, file);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.setDataAndType(apkUri, "application/vnd.android.package-archive");
} else {
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
Uri uri = Uri.fromFile(file);
intent.setDataAndType(uri, "application/vnd.android.package-archive");
}
context.startActivity(intent);
}
}