Могу ли я повторно использовать LayoutPrams с ViewGroup.addView?
Есть лиViewGroup.addView
клоныLayoutParams
данные внутрь или ссылки на это? Могу ли я использовать один и тот же экземплярLayoutParams
с несколькими звонками наaddView()
с разными взглядами?
В apidoc ничего об этом нет.
WOW
Ответ НЕТ (проверено экспериментально):
<code>public class SymbolPadActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); RelativeLayout.LayoutParams labelParams; /* * This block to reuse is not working labelParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); labelParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE); labelParams.addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE); */ RelativeLayout mover = new RelativeLayout(this); TextView textView; for(int leftMargin = 0; leftMargin<3000; leftMargin += 100) { for(int topMargin=0; topMargin<800; topMargin += 40) { // I can't omit these 3 lines labelParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); labelParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE); labelParams.addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE); labelParams.leftMargin = leftMargin; labelParams.topMargin = topMargin; textView = new TextView(this); textView.setText("(" + leftMargin + "," + topMargin + ")"); mover.addView(textView, labelParams); } } RelativeLayout.LayoutParams moverParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); moverParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE); moverParams.addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE); moverParams.leftMargin = 0; moverParams.topMargin = 0; RelativeLayout stator = new RelativeLayout(this); stator.addView(mover, 0, moverParams); setContentView(stator); } </code>
}