package com.zxing;
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import android.app.Activity;
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import android.app.Application;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.PackageInfo;
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import android.content.pm.PackageManager;
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import android.content.res.Resources;
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import android.os.Build;
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import com.zxing.utils.Strings;
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public final class ContextHelper {
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private static Application application;
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private static Class splashCls;
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/**
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* 初始化
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*
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* @param application app
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*/
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public static void init(Application application) {
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if (ContextHelper.application == null) {
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ContextHelper.application = application;
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}
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}
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public static Context getAppContext() {
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if (application != null) {
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return application.getApplicationContext();
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}
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return null;
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}
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public static Application getApp() {
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return application;
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}
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public static Resources getResources() {
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Context context = getAppContext();
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if (context != null) {
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return context.getResources();
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}
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return null;
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}
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public static void setSplashCls(Class cls) {
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ContextHelper.splashCls = cls;
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}
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public static Class getSplashCls() {
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return splashCls;
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}
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/**
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* 资源ID获取String
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*/
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public static String getString(int stringId) {
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if (getAppContext() == null) {
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return Strings.EMPTY;
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}
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return getAppContext().getString(stringId);
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}
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public static String getString(int stringId, Object... formatArgs) {
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if (getAppContext() == null) {
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return Strings.EMPTY;
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}
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return getAppContext().getString(stringId, formatArgs);
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}
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public static int getDimensionPixelSize(int dimenId) {
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try {
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return getResources().getDimensionPixelSize(dimenId);
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} catch (Resources.NotFoundException e) {
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e.printStackTrace();
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}
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return 0;
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}
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public static int getDimen(int dimenId) {
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try {
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return getResources().getDimensionPixelSize(dimenId);
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} catch (Resources.NotFoundException e) {
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e.printStackTrace();
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}
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return 0;
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}
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/**
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* 获取应用的版本号
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*/
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public static String getAppVersion() {
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Context context = getAppContext();
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if (context != null) {
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PackageManager packageManager = context.getPackageManager();
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PackageInfo packageInfo;
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try {
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packageInfo = packageManager.getPackageInfo(context.getPackageName(), 0);
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return packageInfo.versionName;
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} catch (PackageManager.NameNotFoundException e) {
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e.printStackTrace();
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}
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}
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return Strings.EMPTY;
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}
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public static boolean isUsable(Context context) {
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if (context == null) {
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return false;
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}
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if (context instanceof Activity && Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
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return !((Activity) context).isDestroyed();
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}
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return true;
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}
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public static void startAppSetting(){
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if(getAppContext()!=null) {
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Intent intent = new Intent("android.settings.SETTINGS");
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intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
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getAppContext().startActivity(intent);
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}
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}
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}
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