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Learning MIT App Inventor: A Hands-On Guide to Building Your Own Android Apps by Mark Sherman, Derek Walter

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Viewer

The Viewer is where you drag out the components (see Figure 3.11). It provides a view of what you have built into the app, with a modest expectation of how it might look.

Image

Figure 3.11 The Viewer is the mock Android screen where you drag components.

A check box just above the Viewer displays any components that would generally be hidden. In later applications, you will see how this can be useful in ensuring the reliability of an app.

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