android - 拍照时获取 - java.lang.Throwable : file://Uri exposed through ClipData. Item.getUri()

Question

异常(exception)是:

file:// Uri exposed through ClipData.Item.getUri()
java.lang.Throwable: file:// Uri exposed through ClipData.Item.getUri()
    at android.os.StrictMode.onFileUriExposed(StrictMode.java:1618)
    at android.net.Uri.checkFileUriExposed(Uri.java:2341)
    at android.content.ClipData.prepareToLeaveProcess(ClipData.java:808)
    at android.content.Intent.prepareToLeaveProcess(Intent.java:7926)
    at android.app.Instrumentation.execStartActivity(Instrumentation.java:1506)
    at android.app.Activity.startActivityForResult(Activity.java:3832)
    at android.app.Activity.startActivityForResult(Activity.java:3783)
    at android.support.v4.app.FragmentActivity.startActivityFromFragment(Unknown Source)
    at android.support.v4.app.Fragment.startActivityForResult(Unknown Source)
    at me.chunyu.ChunyuDoctor.Utility.w.takePhoto(Unknown Source)
    at me.chunyu.ChunyuDoctor.Dialog.ChoosePhotoDialogFragment.takePhoto(Unknown Source)
    at me.chunyu.ChunyuDoctor.Dialog.ChoosePhotoDialogFragment.access$000(Unknown Source)
    at me.chunyu.ChunyuDoctor.Dialog.b.onClick(Unknown Source)
    at me.chunyu.ChunyuDoctor.Dialog.ChoiceDialogFragment.onClick(Unknown Source)
    at android.view.View.performClick(View.java:4848)
    at android.view.View$PerformClick.run(View.java:20270)
    at android.os.Handler.handleCallback(Handler.java:815)
    at android.os.Handler.dispatchMessage(Handler.java:104)
    at android.os.Looper.loop(Looper.java:194)
    at android.app.ActivityThread.main(ActivityThread.java:5643)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

我的代码在这里:

public static void takePhoto(Fragment fragment, int token, Uri uri) {
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    if (uri != null) {
        intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
    }
    fragment.startActivityForResult(intent, token);
}

我搜索了类似的问题和解决方案。并修改代码如下:

public static void takePhoto(Fragment fragment, int token, Uri uri) {
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION
            | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
    if (uri != null) {
        intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
        intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
    }
    fragment.startActivityForResult(intent, token);
}

但这也行不通。

它发生在 Android 5.1 上，而在 Android 4.3 上运行良好。有没有人遇到同样的问题？要求一些预付款。在线等待...

Answer 1

我已经解决了这个问题。

首先，出现此问题是因为 StrictMode 阻止使用 file:// 方案传递 URI。

所以有两种解决方案:

1. 更改 StrictMode。见 similar problem和 its code .但是对于我们的应用来说，修改安卓源代码是不现实的。

2. 使用其他 URI 方案，而不是 file://。例如，与 MediaStore 相关的 content://。

所以我选择了第二种方法:

private void doTakePhoto() {
    try {
        ContentValues values = new ContentValues(1);
        values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpg");
        mCameraTempUri = getActivity().getContentResolver()
                .insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);

        takePhoto(this, RequestCode.REQCODE_TAKE_PHOTO, mCameraTempUri);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

public static void takePhoto(Fragment fragment, int token, Uri uri) {
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION
        | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
    if (uri != null) {
        intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
        intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
    }
    fragment.startActivityForResult(intent, token);
}

另外，还有一个 solution .