Java Code Examples for android.app.Activity#getPackageManager()

public static void onAbout(final Activity activity) {
    String versionName = "";
    try {
        PackageManager packageManager = activity.getPackageManager();
        String packageName = activity.getPackageName();
        versionName = packageManager.getPackageInfo(packageName, 0).versionName;
    } catch (PackageManager.NameNotFoundException e) {
        versionName = "unknown";
    }
    new AlertDialog.Builder(activity)
            .setTitle(R.string.about_title)
            .setMessage(activity.getString(R.string.about_text, versionName))
            .setPositiveButton(R.string.alert_ok_button, null)
            .setCancelable(false)
            .show();
}
 

private boolean openOtherPage(String intentUrl) {
	try {
		Intent intent;
		Activity mActivity = null;
		if ((mActivity = mWeakReference.get()) == null)
			return true;
		PackageManager packageManager = mActivity.getPackageManager();
		intent = new Intent().parseUri(intentUrl, Intent.URI_INTENT_SCHEME);
		ResolveInfo info = packageManager.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
		LogUtils.i(TAG, "resolveInfo:" + info + "   package:" + intent.getPackage());
		if (info != null) {  //跳到该应用
			mActivity.startActivity(intent);
			return true;
		}
	} catch (Throwable ignore) {
		if (LogUtils.isDebug()) {
			ignore.printStackTrace();
		}
	}

	return false;
}
 

private void handleIntentUrl(String intentUrl) {
	try {

		Intent intent = null;
		if (TextUtils.isEmpty(intentUrl) || !intentUrl.startsWith(INTENT_SCHEME))
			return;

		Activity mActivity = null;
		if ((mActivity = mWeakReference.get()) == null)
			return;
		PackageManager packageManager = mActivity.getPackageManager();
		intent = new Intent().parseUri(intentUrl, Intent.URI_INTENT_SCHEME);
		ResolveInfo info = packageManager.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
		LogUtils.i("Info", "resolveInfo:" + info + "   package:" + intent.getPackage());
		if (info != null) {  //跳到该应用
			mActivity.startActivity(intent);
			return;
		}
	} catch (Exception e) {
		e.printStackTrace();
	}


}
 

/**
 * 获取 Activity 的 title
 *
 * @param activity Activity
 * @return Activity 的 title
 */
private static String getActivityTitle(Activity activity) {
    if (activity != null) {
        try {
            String activityTitle = null;

            if (Build.VERSION.SDK_INT >= 11) {
                String toolbarTitle = getToolbarTitle(activity);
                if (!TextUtils.isEmpty(toolbarTitle)) {
                    activityTitle = toolbarTitle;
                }
            }

            if (!TextUtils.isEmpty(activityTitle)) {
                activityTitle = activity.getTitle().toString();
            }

            if (TextUtils.isEmpty(activityTitle)) {
                PackageManager packageManager = activity.getPackageManager();
                if (packageManager != null) {
                    ActivityInfo activityInfo = packageManager.getActivityInfo(activity.getComponentName(), 0);
                    if (!TextUtils.isEmpty(activityInfo.loadLabel(packageManager))) {
                        activityTitle = activityInfo.loadLabel(packageManager).toString();
                    }
                }
            }

            return activityTitle;
        } catch (Throwable ignore) {
            ExceptionUtil.exceptionThrow(ignore);
            return null;
        }
    }
    return null;
}
 

@Nullable
private static String getTitle(@NonNull Activity activity, @NonNull String packageName) {
    PackageManager pm = activity.getPackageManager();
    try {
        ApplicationInfo info = pm.getApplicationInfo(packageName, PackageManager.GET_META_DATA);
        CharSequence title = pm.getApplicationLabel(info);
        if (title != null) {
            return title.toString();
        }
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }
    return null;
}
 

public static boolean isGooglePlaySafe(Activity activity) {
    Uri uri = Uri.parse("http://play.google.com/store/apps/details?id=com.google.android.gms");
    Intent mapCall = new Intent(Intent.ACTION_VIEW, uri);
    mapCall.addFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK);
    mapCall.setPackage("com.android.vending");
    PackageManager packageManager = activity.getPackageManager();
    List<ResolveInfo> activities = packageManager.queryIntentActivities(mapCall, 0);
    return activities.size() > 0;
}
 

public static String getVersionName(Activity activity) {
    // 获取packagemanager的实例
    PackageManager packageManager = activity.getPackageManager();
    // getPackageName()是你当前类的包名，0代表是获取版本信息
    PackageInfo packInfo = null;
    try {
        packInfo = packageManager.getPackageInfo(activity.getPackageName(), 0);
        String version = packInfo.versionName;
        return version;
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
        return "0";
    }
}
 

public static boolean isGooglePlaySafe(Activity activity) {
    Uri uri = Uri.parse("http://play.google.com/store/apps/details?id=com.google.android.gms");
    Intent mapCall = new Intent(Intent.ACTION_VIEW, uri);
    mapCall.addFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK);
    mapCall.setPackage("com.android.vending");
    PackageManager packageManager = activity.getPackageManager();
    List<ResolveInfo> activities = packageManager.queryIntentActivities(mapCall, 0);
    return activities.size() > 0;
}
 

/**
 * Loads an icon from the icon pack based on the received package name.
 *
 * @param activity       where LauncherApps service can be retrieved.
 * @param appPackageName Package name of the app whose icon is to be loaded.
 *
 * @return Drawable Will return null if there is no icon associated with the package name,
 * otherwise an associated icon from the icon pack will be returned.
 */
private static Drawable getIconDrawable(Activity activity, String appPackageName, long user) {
    PackageManager packageManager = activity.getPackageManager();
    String componentName = "ComponentInfo{" + appPackageName + "}";
    Resources iconRes = null;
    Drawable defaultIcon = null;

    try {
        if (Utils.atLeastLollipop()) {
            LauncherApps launcher = (LauncherApps) activity.getSystemService(
                    Context.LAUNCHER_APPS_SERVICE);
            UserManager userManager = (UserManager) activity.getSystemService(
                    Context.USER_SERVICE);

            if (userManager != null && launcher != null) {
                defaultIcon = launcher.getActivityList(AppUtils.getPackageName(appPackageName),
                        userManager.getUserForSerialNumber(user))
                                      .get(0).getBadgedIcon(0);
            }
        } else {
            defaultIcon = packageManager.getActivityIcon(
                    ComponentName.unflattenFromString(appPackageName));
        }

        if (!"default".equals(iconPackageName)) {
            iconRes = packageManager.getResourcesForApplication(iconPackageName);
        } else {
            return defaultIcon;
        }
    } catch (PackageManager.NameNotFoundException e) {
        Utils.sendLog(Utils.LogLevel.ERROR, e.toString());
    }

    String drawable = mPackagesDrawables.get(componentName);
    if (drawable != null && iconRes != null) {
        return loadDrawable(iconRes, drawable, iconPackageName);
    } else {
        return defaultIcon;
    }
}
 

/**
 * Show an app installation alert, in case you need to do that yourself.
 * @param activity calling Activity
 */
public static void showAppInstallAlert(final Activity activity){
	String appName=null;
	try{
		PackageManager pm=activity.getPackageManager();
		appName=pm.getApplicationLabel(pm.getApplicationInfo(activity.getPackageName(), 0)).toString().replace("<", "&lt;");
	}catch(PackageManager.NameNotFoundException ignore){}
	ImageView banner=new ImageView(activity);
	banner.setImageResource(R.drawable.telegram_logo_large);
	banner.setBackgroundColor(0xFF4fa9e6);
	float dp=activity.getResources().getDisplayMetrics().density;
	int pad=Math.round(34*dp);
	banner.setPadding(0, pad, 0, pad);
	LinearLayout content=new LinearLayout(activity);
	content.setOrientation(LinearLayout.VERTICAL);
	content.addView(banner);
	TextView alertText=new TextView(activity);
	alertText.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 14);
	alertText.setTextColor(0xFF000000);
	alertText.setText(Html.fromHtml(activity.getString(R.string.PassportSDK_DownloadTelegram, appName).replaceAll("\\*\\*([^*]+)\\*\\*", "<b>$1</b>")));
	alertText.setPadding(Math.round(24*dp), Math.round(24*dp), Math.round(24*dp), Build.VERSION.SDK_INT<Build.VERSION_CODES.LOLLIPOP ? Math.round(24*dp) : Math.round(2*dp));
	content.addView(alertText);
	AlertDialog alert=new AlertDialog.Builder(activity, /*Build.VERSION.SDK_INT<Build.VERSION_CODES.LOLLIPOP ? AlertDialog.THEME_HOLO_LIGHT :*/ R.style.Theme_Telegram_Alert)
			.setView(content)
			.setPositiveButton(R.string.PassportSDK_OpenGooglePlay, new DialogInterface.OnClickListener(){
				@Override
				public void onClick(DialogInterface dialog, int which){
					activity.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=org.telegram.messenger")));
				}
			})
			.setNegativeButton(R.string.PassportSDK_Cancel, null)
			.show();
	if(Build.VERSION.SDK_INT<Build.VERSION_CODES.LOLLIPOP){
		int titleDividerId=activity.getResources().getIdentifier("titleDivider", "id", "android");
		View titleDivider=alert.findViewById(titleDividerId);
		if(titleDivider!=null){
			titleDivider.setVisibility(View.GONE);
		}
	}
}
 

private void updateUi(Activity activity) {
    PackageManager packageManager = activity.getPackageManager();
    try {
        int packageFlags;
        if (Build.VERSION.SDK_INT < 24) {
            //noinspection deprecation
            packageFlags = PackageManager.GET_UNINSTALLED_PACKAGES;
        } else {
            packageFlags = PackageManager.MATCH_UNINSTALLED_PACKAGES;
        }
        ApplicationInfo info = packageManager.getApplicationInfo(
                Constants.PACKAGE_NAME_APP_RESTRICTION_SCHEMA,
                packageFlags);
        DevicePolicyManager devicePolicyManager =
                (DevicePolicyManager) activity.getSystemService(Activity.DEVICE_POLICY_SERVICE);
        if ((info.flags & ApplicationInfo.FLAG_INSTALLED) != 0) {
            if (!devicePolicyManager.isApplicationHidden(
                    EnforcerDeviceAdminReceiver.getComponentName(activity),
                    Constants.PACKAGE_NAME_APP_RESTRICTION_SCHEMA)) {
                // The app is ready to enforce restrictions
                // This is unlikely to happen in this sample as unhideApp() handles it.
                mListener.onStatusUpdated();
            } else {
                // The app is installed but hidden in this profile
                mTextStatus.setText(R.string.status_not_activated);
                mButtonUnhide.setVisibility(View.VISIBLE);
            }
        } else {
            // Need to reinstall the sample app
            mTextStatus.setText(R.string.status_need_reinstall);
            mButtonUnhide.setVisibility(View.GONE);
        }
    } catch (PackageManager.NameNotFoundException e) {
        // Need to reinstall the sample app
        mTextStatus.setText(R.string.status_need_reinstall);
        mButtonUnhide.setVisibility(View.GONE);
    }
}
 

/** Launch an email intent if the device is capable.
 *
 * @param activity The parent activity (for context)
 * @param addr The address to email (not the full URI)
 * @param text The email body
 */
public static void launchEmailIntent(final Activity activity, String addr, String text) {
    Log.i(LOG_TAG,"Launch email intent from "+activity.getLocalClassName());
    // create email intent
    Intent emailIntent = new Intent(Intent.ACTION_SEND);
    emailIntent.putExtra(Intent.EXTRA_EMAIL, new String[] {addr});
    emailIntent.setType("text/plain");
    // make sure there is an activity which can handle the intent.
    PackageManager emailpackageManager = activity.getPackageManager();
    List<ResolveInfo> emailresolveInfos = emailpackageManager.queryIntentActivities(emailIntent, 0);
    if(emailresolveInfos.size() > 0) {
        activity.startActivity(emailIntent);
    }
}
 

public static String getVersionName(Activity activity) {
    // 获取packagemanager的实例
    PackageManager packageManager = activity.getPackageManager();
    // getPackageName()是你当前类的包名，0代表是获取版本信息
    PackageInfo packInfo = null;
    try {
        packInfo = packageManager.getPackageInfo(activity.getPackageName(), 0);
        String version = packInfo.versionName;
        return version;
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
        return "0";
    }
}
 

/**
 * Checks if the application is available in this profile.
 *
 * @param packageName The package name
 * @return True if the application is available in this profile.
 */
private boolean isApplicationEnabled(String packageName) {
    Activity activity = getActivity();
    PackageManager packageManager = activity.getPackageManager();
    try {
        int packageFlags;
        if(Build.VERSION.SDK_INT < 24){
            //noinspection deprecation
            packageFlags = PackageManager.GET_UNINSTALLED_PACKAGES;
        }else{
            packageFlags = PackageManager.MATCH_UNINSTALLED_PACKAGES;
        }
        ApplicationInfo applicationInfo = packageManager.getApplicationInfo(
                packageName, packageFlags);
        // Return false if the app is not installed in this profile
        if (0 == (applicationInfo.flags & ApplicationInfo.FLAG_INSTALLED)) {
            return false;
        }
        // Check if the app is not hidden in this profile
        DevicePolicyManager devicePolicyManager =
                (DevicePolicyManager) activity.getSystemService(Activity.DEVICE_POLICY_SERVICE);
        return !devicePolicyManager.isApplicationHidden(
                BasicDeviceAdminReceiver.getComponentName(activity), packageName);
    } catch (PackageManager.NameNotFoundException e) {
        return false;
    }
}
 

/** Checks if the intent could be performed by a system. */
private static boolean systemCanHandleIntent(Activity activity, Intent intent) {
  if (activity == null) {
    return false;
  }

  PackageManager manager = activity.getPackageManager();
  List<ResolveInfo> infos = manager.queryIntentActivities(intent, 0);
  return infos != null && !infos.isEmpty();
}
 

/**
 * 获取版本名
 *
 * @param activity
 * @return
 */
public static String getVersionName(Activity activity) {
    PackageManager packageManager = activity.getPackageManager();
    PackageInfo packInfo;
    try {
        packInfo = packageManager.getPackageInfo(activity.getPackageName(), 0);
        return packInfo.versionName;
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
        return "1.0";
    }
}
 

/**
 * Creates an intent to take a video from camera or gallery or any other application that can
 * handle the intent.
 *
 * @param ctx
 * @param savingUri
 * @param durationInSeconds
 * @return
 */
public static Intent createTakeVideoIntent(Activity ctx, Uri savingUri, int durationInSeconds) {

    if (savingUri == null) {
        throw new NullPointerException("Uri cannot be null");
    }

    final List<Intent> cameraIntents = new ArrayList<Intent>();
    final Intent captureIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
    final PackageManager packageManager = ctx.getPackageManager();
    final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
    for (ResolveInfo res : listCam) {
        final String packageName = res.activityInfo.packageName;
        final Intent intent = new Intent(captureIntent);
        intent.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
        intent.setPackage(packageName);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, savingUri);
        intent.putExtra(MediaStore.EXTRA_DURATION_LIMIT, durationInSeconds);
        cameraIntents.add(intent);
    }

    // Filesystem.
    final Intent galleryIntent = new Intent();
    galleryIntent.setType("video/*");
    galleryIntent.setAction(Intent.ACTION_GET_CONTENT);

    // Chooser of filesystem options.
    final Intent chooserIntent = Intent.createChooser(galleryIntent, "Select Source");

    // Add the camera options.
    chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable[]{}));

    return chooserIntent;
}
 

/**
 * @param ctx
 * @param savingUri
 * @param durationInSeconds
 * @return
 * @deprecated Use {@link MediaUtils#createTakeVideoIntent(Activity, Uri, int)}
 * Creates an intent to take a video from camera or gallery or any other application that can
 * handle the intent.
 */
public static Intent createTakeVideoIntent(Activity ctx, Uri savingUri, int durationInSeconds) {

    if (savingUri == null) {
        throw new NullPointerException("Uri cannot be null");
    }

    final List<Intent> cameraIntents = new ArrayList<Intent>();
    final Intent captureIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
    final PackageManager packageManager = ctx.getPackageManager();
    final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
    for (ResolveInfo res : listCam) {
        final String packageName = res.activityInfo.packageName;
        final Intent intent = new Intent(captureIntent);
        intent.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
        intent.setPackage(packageName);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, savingUri);
        intent.putExtra(MediaStore.EXTRA_DURATION_LIMIT, durationInSeconds);
        cameraIntents.add(intent);
    }

    // Filesystem.
    final Intent galleryIntent = new Intent();
    galleryIntent.setType("video/*");
    galleryIntent.setAction(Intent.ACTION_GET_CONTENT);

    // Chooser of filesystem options.
    final Intent chooserIntent = Intent.createChooser(galleryIntent, "Select Source");

    // Add the camera options.
    chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable[]{}));

    return chooserIntent;
}
 

/**
 * @param intent
 * @return
 */
protected boolean isIntentAvailable(Activity activity, Intent intent) {
    PackageManager packageManager = activity.getPackageManager();
    List<ResolveInfo> list = packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
    return list.size() > 0;
}
 

/**
 * Determines if the OneDrive application is installed and able to process
 * the specified {@link Intent}.
 * 
 * @param activity The activity that would start the picker experience
 * @param intent The intent to check availability
 * @return <b>true</b> if the OneDrive application can start and execute the
 *         file picking flow. <b>false</b> if the OneDrive application does
 *         not support this call, or if the application is not installed.
 */
public static boolean isAvailable(final Activity activity, final Intent intent) {
	final PackageManager pm = activity.getPackageManager();
    return pm.queryIntentActivities(intent, 0).size() != 0;
}