Java PackageManager.getPackageInfo方法代码示例

import android.content.pm.PackageManager; //导入方法依赖的package包/类
/**
 * manifest 中的 versionName 字段
 */
public static String getAppVersion(Context context) {
    if (appVersionName == null) {
        PackageManager manager = context.getPackageManager();
        try {
            android.content.pm.PackageInfo info = manager.getPackageInfo(context.getPackageName(), 0);
            appVersionName = info.versionName;
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    if (appVersionName == null) {
        return "";
    } else {
        return appVersionName;
    }
}
 

import android.content.pm.PackageManager; //导入方法依赖的package包/类
/**
 * 返回版本信息
 * 
 * @param context
 * @return
 */
public static String getAppVersion(Context context)
{
	PackageManager localPackageManager = context.getPackageManager();
	try
	{
		String str = localPackageManager.getPackageInfo(context.getPackageName(), 0).versionName;
		return str;
	}
	catch (PackageManager.NameNotFoundException e)
	{
		Log.E(TAG, "getAppVersion error" + e.getMessage());
		e.printStackTrace();
	}

	return "";
}
 

import android.content.pm.PackageManager; //导入方法依赖的package包/类
/**
 * Gets the fingerprint of the signed certificate of a package.
 */
public static String getFingerprint(Context context, String packageName) throws Exception {
    PackageManager pm = context.getPackageManager();
    PackageInfo packageInfo = pm.getPackageInfo(packageName, PackageManager.GET_SIGNATURES);
    Signature[] signatures = packageInfo.signatures;
    if (signatures.length != 1) {
        throw new SecurityException(packageName + " has " + signatures.length + " signatures");
    }
    byte[] cert = signatures[0].toByteArray();
    try (InputStream input = new ByteArrayInputStream(cert)) {
        CertificateFactory factory = CertificateFactory.getInstance("X509");
        X509Certificate x509 = (X509Certificate) factory.generateCertificate(input);
        MessageDigest md = MessageDigest.getInstance("SHA256");
        byte[] publicKey = md.digest(x509.getEncoded());
        return toHexFormat(publicKey);
    }
}
 

import android.content.pm.PackageManager; //导入方法依赖的package包/类
public void onCreate(Context context) {
    AttributeCache.init(context);
    PackageManager pm = context.getPackageManager();
    PackageInfo packageInfo = null;
    try {
        packageInfo = pm.getPackageInfo(context.getPackageName(),
                PackageManager.GET_ACTIVITIES | PackageManager.GET_PROVIDERS | PackageManager.GET_META_DATA);
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }

    if (packageInfo == null) {
        throw new RuntimeException("Unable to found PackageInfo : " + context.getPackageName());
    }
    sService.set(this);

}
 

import android.content.pm.PackageManager; //导入方法依赖的package包/类
@SuppressWarnings("deprecation")
private void dumpPhoneInfo(PrintWriter pw) throws PackageManager.NameNotFoundException {
    PackageManager pm = mContext.getPackageManager();
    PackageInfo pi = pm.getPackageInfo(mContext.getPackageName(),
            PackageManager.GET_ACTIVITIES);
    pw.print("App Version: ");
    pw.print(pi.versionName);
    pw.print('_');
    pw.println(pi.versionCode);

    /* Android 版本号 */
    pw.print("OS Version: ");
    pw.print(Build.VERSION.RELEASE);
    pw.print('_');
    pw.println(SDK_INT);

    /* 手机制造商 */
    pw.print("Vendor: ");
    pw.println(Build.MODEL);

    /* CPU 架构 */
    pw.print("CPU ABI: ");
    pw.println(Build.CPU_ABI);
}
 

import android.content.pm.PackageManager; //导入方法依赖的package包/类
/**
     * 返回app的版本名称.
     *
     * @param context the context
     * @return app version name
     */
    public static String getAppVersionName(Context context) {
        String version = "unknown";
// 获取package manager的实例
        PackageManager packageManager = context.getPackageManager();
// getPackageName()是你当前类的包名，0代表是获取版本信息
        PackageInfo packInfo;
        try {
            packInfo = packageManager.getPackageInfo(context.getPackageName(),
                    0);
            version = packInfo.versionName;
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
// Log.i("版本名称:", version);
        return version;
    }
 

import android.content.pm.PackageManager; //导入方法依赖的package包/类
/**
 * 获取应用的versionCode
 *
 * @return int类型的versionCode
 */
public static int getVersionCode(Context context) {

    try {
        PackageManager manager = context.getPackageManager();
        PackageInfo info = manager.getPackageInfo(context.getPackageName(), 0);
        return info.versionCode;
    } catch (Exception e) {
        e.printStackTrace();
        return 0;
    }
}
 

import android.content.pm.PackageManager; //导入方法依赖的package包/类
/**
 * 获取当前App信息
 * <p>AppInfo（名称，图标，包名，版本号，版本Code，是否安装在SD卡，是否是用户程序）
 */
public static AppInfo getAppInfo(Context context) {
    PackageManager pm = context.getPackageManager();
    PackageInfo pi = null;
    try {
        pi = pm.getPackageInfo(context.getApplicationContext().getPackageName(), 0);
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }
    return pi != null ? getBean(pm, pi) : null;
}
 

import android.content.pm.PackageManager; //导入方法依赖的package包/类
/**
 * 获取App路径
 *
 * @param packageName 包名
 * @return App路径
 */
public static String getAppPath(final String packageName) {
    if (isSpace(packageName)) return null;
    try {
        PackageManager pm = Utils.getApp().getPackageManager();
        PackageInfo pi = pm.getPackageInfo(packageName, 0);
        return pi == null ? null : pi.applicationInfo.sourceDir;
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
        return null;
    }
}
 

import android.content.pm.PackageManager; //导入方法依赖的package包/类
/**
 * 获取版本号
 */
public static int getAppVersionCode(Context context) {
    int versioncode = -1;
    try {
        // ---get the package info---
        PackageManager pm = context.getPackageManager();
        PackageInfo pi = pm.getPackageInfo(context.getPackageName(), 0);
        versioncode = pi.versionCode;
    } catch (Exception e) {
        Log.e("VersionInfo", "Exception", e);
    }
    return versioncode;
}
 

import android.content.pm.PackageManager; //导入方法依赖的package包/类
/**
 * Check package is support MiPush.
 * @param pkg Package Name
 * @param manager Package manager
 * @return This package support status. If not use MiPush, will returns null
 */
@Nullable
public static SupportStatus check (String pkg,
                                   PackageManager manager) {
    try {
        PackageInfo info = manager.getPackageInfo(pkg, PackageManager.GET_SERVICES |
                PackageManager.GET_RECEIVERS | PackageManager.GET_DISABLED_COMPONENTS);
        return check(info, manager);
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
        return null;
    }
}
 

import android.content.pm.PackageManager; //导入方法依赖的package包/类
/**
 * 获取App版本号
 *
 * @param context     上下文
 * @param packageName 包名
 * @return App版本号
 */
public static String getAppVersionName(Context context, String packageName) {
    if (StringCovertUtils.isSpace(packageName)) return null;
    try {
        PackageManager pm = context.getPackageManager();
        PackageInfo pi = pm.getPackageInfo(packageName, 0);
        return pi == null ? null : pi.versionName;
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
        return null;
    }
}
 

import android.content.pm.PackageManager; //导入方法依赖的package包/类
/**
 * 根据包名获取程序的VersionCode
 *
 * @param pContext
 * @param pPackageName
 * @return
 */
public static final int getVersionCode(Context pContext, String pPackageName) {
    PackageManager packageManager = pContext.getPackageManager();
    PackageInfo packageInfo = null;
    try {
        packageInfo = packageManager.getPackageInfo(pPackageName, 0);
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }
    if (packageInfo != null) {
        return packageInfo.versionCode;
    } else {
        return UNKNOWN_VERSION_CODE;
    }
}
 

import android.content.pm.PackageManager; //导入方法依赖的package包/类
/**
 * 获取应用启动图标
 * @param context
 * @return
 * @throws Exception
 */
public static Drawable getApplicationIconDrawable(Context context) throws Exception {  
    PackageManager pm = context.getPackageManager();
    String packageName = getTopActivityPackageName(context);
    PackageInfo packageInfo = pm.getPackageInfo(packageName, PackageManager.GET_UNINSTALLED_PACKAGES);
    Drawable drawable = packageInfo.applicationInfo.loadIcon(pm);
    return drawable;

}
 

import android.content.pm.PackageManager; //导入方法依赖的package包/类
/**
 * 获取App名称
 *
 * @param context     上下文
 * @param packageName 包名
 * @return App名称
 */
public static String getAppName(Context context, String packageName) {
    if (DataUtil.isNullString(packageName))
        return null;
    try {
        PackageManager pm = context.getPackageManager();
        PackageInfo pi = pm.getPackageInfo(packageName, 0);
        return pi == null ? null : pi.applicationInfo.loadLabel(pm).toString();
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
        return null;
    }
}