Merge "Ensure URIs have content:// scheme in WPM" into klp-dev

package android.app;

import android.content.ContentResolver;

import android.content.Context;

import android.content.Intent;

import android.content.pm.PackageManager;

     * an intent; instead, use {@link #getCropAndSetWallpaperIntent}.

     * <p>Input:  {@link Intent#getData} is the URI of the image to crop and set as wallpaper.

     * <p>Output: RESULT_OK if user decided to crop/set the wallpaper, RESULT_CANCEL otherwise

     * Activities that support this intent should specify a MIME filter of "image/*"

     */

    public static final String ACTION_CROP_AND_SET_WALLPAPER =

            "android.service.wallpaper.CROP_AND_SET_WALLPAPER";

     * that supports cropping wallpapers, it will be preferred as the default.

     * Use this method instead of directly creating a {@link #ACTION_CROP_AND_SET_WALLPAPER}

     * intent.

     *

     * @param imageUri The image URI that will be set in the intent. The must be a content

     *                 URI and its provider must resolve its type to "image/*"

     *

     * @throws IllegalArgumentException if the URI is not a content URI or its MIME type is

     *         not "image/*"

     */

    public Intent getCropAndSetWallpaperIntent(Uri imageUri) {

        if (!ContentResolver.SCHEME_CONTENT.equals(imageUri.getScheme())) {

            throw new IllegalArgumentException("Image URI must be of the "

                    + ContentResolver.SCHEME_CONTENT + " scheme type");

        }

        final PackageManager packageManager = mContext.getPackageManager();

        Intent cropAndSetWallpaperIntent =

                new Intent(ACTION_CROP_AND_SET_WALLPAPER, imageUri);

        // fallback crop activity

        cropAndSetWallpaperIntent.setPackage("com.android.wallpapercropper");

        List<ResolveInfo> cropAppList = packageManager.queryIntentActivities(

                cropAndSetWallpaperIntent, 0);

        if (cropAppList.size() > 0) {

            return cropAndSetWallpaperIntent;

        }

        // If the URI is not of the right type, or for some reason the system wallpaper

        // cropper doesn't exist, return null

        throw new IllegalArgumentException("Cannot use passed URI to set wallpaper; " +

            "check that the type returned by ContentProvider matches image/*");

        return null;

    }

    /**

     * Change the current system wallpaper to the bitmap in the given resource.