I'm studying in class 7 and learning fusion tables. I created a table with a single column called "Text" to accept text. In app inventor I have done the following steps.
1. Created a service account key.
2. Copied and pasted the service account in the share option in Fusion tables and shared it.
3. In fusion table I got table Id from File - About this table - Id (copied without any spaces)
4. In app inventor a screen with a label, a button and Fusion table control 1 (Invisible component) .(see pic1)
5. program (see pic2)
I have not used API but have used service account method
I have also downloaded and uploaded the *.pk2 file in appinventor
But still it gives this error (see pic 4 and its continuation)
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After you clear the field, you have to click on a blank spot in that area outside the text box to make the change stick.
To test that, clear the field, then switch to the label or button, then switch back to the Fusion Control to see if it is still cleared.
I tested your app after clearing the field, and it worked for me.
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Maybe you are running an old version of the program on your mobile.
Try doing a Project->Save As ->TESTV02 to give it a new name, build TESV02, and load TESTV02.apk onto your phone, after removing the old test app from your phone.
This will avoid any confusion between old and new versions of the app.
I see no reason why this should work for me but not for you.
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From the AI2 Help on Fusion Tables:
Using the FusiontablesControl Component Creating Fusion Tables
You will probably want to create your own Fusion Tables to experiment with as you are developing your apps. This is as easy as creating a Google document, if you are familiar with that process. Here are the steps:
1. On the web, login to your Gmail account or any other Google service (e.g., Drive, YouTube). Navigate to Google Drive.
2. Click the New button and navigate to More. If you do not see a Google Fusion Tables option, select Connect more apps and scroll through the page of Google services to find the Fusion Tables service and connect it to your Google Drive.
3. You may want to view some of the examples and work through a tutorial (e.g. Pizza Party Tutorial) to learn the basics.
4. Click the See my tables button (top right of the page). This will bring you to your own page.
5. You should see a list of your own tables or tables that have been shared with you (possibly none).
6. Use the Create button to create a new table. Give it some column names and save it.
7. Click on the Share button (top right) to modify the table's permissions.