resolveActivity 方法对于 Android 14 返回 null

Question

我面临一个特殊问题，resolveActivity 返回 null。我知道已经有类似的问题并提供了解决方案，但我特别面临 android 14 的问题。我已在清单文件中添加了对意图的查询。但此问题仅在 Android 14 设备上持续存在。

这是我的清单文件的片段

<uses-feature android:name="android.hardware.camera" android:required= "true" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_MEDIA_IMAGES"/>
    <uses-permission android:name="android.permission.READ_MEDIA_VIDEO"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <!--
         The ACCESS_COARSE/FINE_LOCATION permissions are not required to use
         Google Maps Android API v2, but you must specify either coarse or fine
         location permissions for the 'MyLocation' functionality.
         android:icon="@drawable/logo"
    -->
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

    <queries>
        <intent>
            <action android:name="android.media.action.IMAGE_CAPTURE" />
        </intent>
    </queries>

    <application
        android:name=".model.Multi_Dex"
        android:allowBackup="true"
        android:hardwareAccelerated="false"
...

这是用于启动相机意图的方法的片段。

private void dispatchTakePictureIntent() {
        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        if(Build.VERSION.SDK_INT>33){
            takePictureIntent.setPackage(context.getPackageName());
        }
        // Ensure that there's a camera activity to handle the intent
        if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
            // Create the File where the photo should go
            File photoFile = null;
            try {
                photoFile = createImageFile();
            } catch (IOException ex) {
                // Error occurred while creating the File
                ex.printStackTrace();
            }
            // Continue only if the File was successfully created
            if (photoFile != null) {
                Uri photoURI = FileProvider.getUriForFile(this,
                        "com.ft.fifthwheel.fileprovider",
                        photoFile);
                takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
                takePictureIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                startActivityForResult(takePictureIntent, REQUEST_CAMERA);
            }
        }
    }

Answer 1

好的，所以我目前已经使用

queryIntentActivities

方法解决了这个问题。我已经获取了

ResolveInfo

对象的列表，为清单文件中提到的每个

Intent

创建了一个新的

intent

，并将每个意图添加到意图列表中。然后我创建了一个选择器意图来触发选择选项来选择我的照片，目前，我只允许相机选项拍照，但我可能会在清单文件中的

queries

内添加更多意图。

这是示例代码

private void dispatchTakePictureIntent() {
        File photoFile = null;
        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        try {
            photoFile = createImageFile();
        } catch (IOException ex) {
            // Error occurred while creating the File
            ex.printStackTrace();
        }
        if (photoFile != null) {
            Uri photoURI = FileProvider.getUriForFile(this,
                    "com.ft.fifthwheel.fileprovider",
                    photoFile);
            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
            List<Intent> intentList = new ArrayList<>();
            List<ResolveInfo> resInfo = context.getPackageManager().queryIntentActivities(takePictureIntent, 0);
            for (ResolveInfo resolveInfo : resInfo) {
                String packageName = resolveInfo.activityInfo.packageName;
                Intent targetedIntent = new Intent(takePictureIntent);
                targetedIntent.setPackage(packageName);
                intentList.add(targetedIntent);
            }
            Intent chooserIntent = Intent.createChooser(intentList.remove(intentList.size() - 1), "Choose an Image");
            chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentList.toArray(new Parcelable[]{}));
            // Ensure that there's a camera activity to handle the intent
            if (chooserIntent.resolveActivity(getPackageManager()) != null) {
                // Create the File where the photo should go
                // Continue only if the File was successfully created
                chooserIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                startActivityForResult(chooserIntent, REQUEST_CAMERA);
            }
        }
    }

如果有更好的解决方案，我将不胜感激。