Most occupations that can be referred to as “blue-collar” depend on some kind of skills, plenty of training and technical knowledge. Several professions are widely found in today's workforce, and the most highly-skilled workers will have the best opportunities for work in these occupations. What's more, the pay for these jobs is almost as much as that for many so-called white collar jobs, and quite often, depending on the industry, these workers even make much more than the average American worker.
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How do you populate a ListView?
A. l use the addltem(Sring s) method.
B. l use an ArrayAdapter which creates a TextView for each string array item and bind them to the ListView.
C. l use the addChild(View v) method.
D. null
How can you react to click events on an item of a ListView?
A. l create and associate to the ListView an object implementing the AdapterView.OnltemClickListener interface.
B. ln the XMLlayout file l set the "onClick" property of the ListView to the name of the method to call when an item is clicked.
C. null-c
D. null-d
It's possible to add music to the output audio flow during a phone call.
A. 对
B. 错
An adapter acts as a bridge between the data source and the list view.
A. 对
B. 错
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