在contact上设置custom_ringtone可以在一些android手机上工作，而其他的则不起作用。

Question

问题是，在小米手机Android8.0上，联系人被分配了一个铃声，但在三星手机上却没有相同的android版本。在这两款手机中，都会显示铃声设置成功，但当我拨打小米手机时，铃声被改变，但当我打三星手机时，铃声是默认的。

以下是相关代码：

AndroidManifest.xml

<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.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.android.vending.BILLING" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.WRITE_CONTACTS" />

RingtoneActivity.java

当用户点击按钮设置联系人铃声时，会调用setRingtoneContact。

static  final int PICK_CONTACT=1;

public void setRingtoneContact(String pathString){

    // contact_selected_ringtone is a global variable
    contact_selected_ringtone = pathString;

    Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.CommonDataKinds.Phone.CONTENT_URI);
    startActivityForResult(intent, PICK_CONTACT);

}

用户选择一个联系人，我们在onActivityResult中接收结果。

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (resultCode == Activity.RESULT_OK && requestCode == PICK_CONTACT) {
        String phoneNo = null;
        String name = null;

        Uri uri = data.getData();
        Cursor cursor = getContentResolver().query(uri, null, null, null, null);

        if (cursor.moveToFirst()) {
            int phoneIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
            int nameIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME);

            phoneNo = cursor.getString(phoneIndex);
            name = cursor.getString(nameIndex);

            Log.e("onActivityResult()", phoneIndex + " " + phoneNo + " " + nameIndex + " " + name);

            setForContact(phoneNo);

        }
        cursor.close();
    }
}

这是一个函数，它实际上为联系人设置了custom_ringtone。

public void setForContact(String contact){
    // The Uri used to look up a contact by phone number
    final Uri lookupUri = Uri.withAppendedPath(ContactsContract.PhoneLookup.CONTENT_FILTER_URI, contact);
    // The columns used for `Contacts.getLookupUri`
    final String[] projection = new String[] {
            ContactsContract.Contacts._ID, ContactsContract.Contacts.LOOKUP_KEY
    };

    final Cursor data = getContentResolver().query(lookupUri, projection, null, null, null);
    data.moveToFirst();
    try {
        // Get the contact lookup Uri
        final long contactId = data.getLong(0);
        final String lookupKey = data.getString(1);
        final Uri contactUri = ContactsContract.Contacts.getLookupUri(contactId, lookupKey);
        if (contactUri == null) {
            // Invalid arguments
            return;
        }
        final File file = new File(contact_selected_ringtone);
        if (file.exists()){
            final String value = Uri.fromFile(file).toString();

            final ContentValues values = new ContentValues(1);
            values.put(ContactsContract.Contacts.CUSTOM_RINGTONE, value);
            try {
                int rows = getContentResolver().update(contactUri, values, null, null);
                if (rows > 0) {
                    Toasty.info(getApplicationContext(),getResources().getString(R.string.ringtone_contact_success),Toast.LENGTH_LONG).show();
                }
            } catch (NullPointerException ex) {
                Log.e("contact_exception", ex.toString());
            }

        }else{
            Toast.makeText(this, "file not exist", Toast.LENGTH_SHORT).show();
        }
    } finally {

        data.close();
    }
}

我们已经研究这个问题两天了，我们到处都在研究这个问题。还有一些关于堆叠溢出的问题，它们也在做同样的事情。这个解决方案有效，但并不适用于所有的手机。希望能找到解决办法。

这是我关于堆栈溢出的第一个问题，如果我没有遵循指导原则，请指导我。

Answer 1

我解决了这个问题。我在这里张贴解决方案。

我在RingtoneActivity.java.中更改了setForContact函数下面是代码：

public void setForContact(String contact){
    // Create File object for the specified ring tone path
    // contact_selected_ringtone is a global variable which has the full path to ringtone
    File f=new File(contact_selected_ringtone);

    // Insert the ring tone to the content provider
    ContentValues content_value=new ContentValues();
    content_value.put(MediaStore.MediaColumns.DATA, f.getAbsolutePath());
    content_value.put(MediaStore.MediaColumns.TITLE, f.getName());
    content_value.put(MediaStore.MediaColumns.SIZE, f.length());
    content_value.put(MediaStore.MediaColumns.MIME_TYPE,"audio/mp3");
    content_value.put(MediaStore.Audio.Media.ARTIST, getString(R.string.app_name));
    content_value.put(MediaStore.Audio.Media.IS_ALARM, false);
    content_value.put(MediaStore.Audio.Media.IS_MUSIC, false);
    content_value.put(MediaStore.Audio.Media.IS_NOTIFICATION, false);
    content_value.put(MediaStore.Audio.Media.IS_RINGTONE, true);

    Uri uri = MediaStore.Audio.Media.getContentUriForPath(f.getAbsolutePath());
    getContentResolver().delete(uri, MediaStore.MediaColumns.DATA + "=\"" + f.getAbsolutePath() + "\"", null);

    Uri newUri = getContentResolver().insert(uri, content_value);

    // The Uri used to look up a contact by phone number
    final Uri lookupUri = Uri.withAppendedPath(ContactsContract.PhoneLookup.CONTENT_FILTER_URI, contact);

    final String[] projection = new String[] {
            ContactsContract.Contacts._ID, ContactsContract.Contacts.LOOKUP_KEY
    };

    final Cursor data = getContentResolver().query(lookupUri, projection, null, null, null);
    data.moveToFirst();
    try {
        // Get the contact lookup Uri
        final long contactId = data.getLong(0);
        final String lookupKey = data.getString(1);
        final Uri contactUri = ContactsContract.Contacts.getLookupUri(contactId, lookupKey);
        String str = data.getString(data.getColumnIndexOrThrow("_id"));
        Uri localUri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_URI, str);
        if (contactUri == null) {
            // Invalid arguments
            return;
        }

        final File file = new File(contact_selected_ringtone);
        final String value = Uri.fromFile(file).toString();

        // Apply the custom ringtone_app
        final ContentValues values = new ContentValues();
        values.put(ContactsContract.Data.RAW_CONTACT_ID, contactId);
        values.put(ContactsContract.Data.CUSTOM_RINGTONE, newUri.toString());
        try {
            int rows = getContentResolver().update(localUri, values, null, null);
            if (rows > 0) {
                Toasty.info(getApplicationContext(),getResources().getString(R.string.ringtone_contact_success),Toast.LENGTH_LONG).show();
            }
        } catch (NullPointerException ex) {
            Log.e("contact_exception", ex.toString());
        }

    } finally {
        data.close();
    }
}

希望它能帮到别人。