我是Android / Glass开发的新手。我正在尝试制作一个语音控制的计算器。由于以下原因导致运行时崩溃：
java.lang.NoClassDefFoundError:
Failed resolution of: Lcom/google/android/glass/widget/CardBuilder;
StartCalculatorActivity类为：
public class StartCalculatorActivity extends Activity {
private CardScrollView mCardScroller;
CardBuilder card;
private View mView;
@Override
protected void onCreate(Bundle bundle) {
super.onCreate(bundle);
card = new CardBuilder(this, CardBuilder.Layout.TEXT);
mView = buildView();
mCardScroller = new CardScrollView(this);
mCardScroller.setAdapter(new CardScrollAdapter() {
@Override
public int getCount() {
return 1;
}
@Override
public Object getItem(int position) {
return mView;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
return mView;
}
@Override
public int getPosition(Object item) {
if (mView.equals(item)) {
return 0;
}
return AdapterView.INVALID_POSITION;
}
});
// Handle the TAP event.
mCardScroller.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// Plays disallowed sound to indicate that TAP actions are not supported.
AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
am.playSoundEffect(Sounds.DISALLOWED);
}
});
setContentView(mCardScroller);
}
@Override
protected void onResume() {
super.onResume();
mCardScroller.activate();
}
@Override
protected void onPause() {
mCardScroller.deactivate();
super.onPause();
}
/**
* Builds a Glass styled "Hello World!" view using the {@link CardBuilder} class.
/*/
private View buildView() {
card.setText(R.string.hello_world);
return card.getView();
}
}
我通过创建一个新目录并将JAR文件粘贴到其中，将JAR文件添加到我的构建路径中。 预先感谢您的帮助。