Android ScrollView在相对布局中遇到麻烦
Sre*_*h G 1 android android-layout
在我的Android应用程序中,我需要一个如下所示的布局
我使用相对布局作为父布局,使用4个相对布局来排列内容 - 标题布局1,标题布局2,内容布局(objRLScrollView -scroll视图在此布局中)和页脚布局
我使用下面的代码来创建上面的布局
public class Login1 extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
RelativeLayout objRLBody=new RelativeLayout(this);
objRLBody.setId(1001);
RelativeLayout.LayoutParams objLLBodyParams=new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT);
objRLBody.setBackgroundColor(Color.parseColor("#d8e4f3"));
objRLBody.setLayoutParams(objLLBodyParams);
/* header portion starts here*/
RelativeLayout objRLActionBar=new RelativeLayout(this);
objRLActionBar.setId(1002);
RelativeLayout.LayoutParams objRLActionBarParams=new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT,50);
objRLActionBarParams.addRule(RelativeLayout.ALIGN_PARENT_TOP);
objRLActionBar.setLayoutParams(objRLActionBarParams);
objRLActionBar.setBackgroundColor(Color.parseColor("#2e4862"));
objRLBody.addView(objRLActionBar);
RelativeLayout objRLSelectedActionBar=new RelativeLayout(this);
objRLSelectedActionBar.setId(1003);
RelativeLayout.LayoutParams objRLSelectedActionBarParams=new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT);
objRLSelectedActionBarParams.addRule(RelativeLayout.BELOW,objRLActionBar.getId());
objRLSelectedActionBar.setLayoutParams(objRLSelectedActionBarParams);
objRLSelectedActionBar.setBackgroundColor(Color.WHITE);
objRLSelectedActionBar.setGravity(Gravity.CENTER|Gravity.LEFT);
TextView objTVSelectedAction = new TextView(this);
RelativeLayout.LayoutParams objTVSelectedActionParams=new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
objTVSelectedAction.setLayoutParams(objTVSelectedActionParams);
objTVSelectedAction.setGravity(Gravity.CENTER);
objTVSelectedAction.setTextColor(Color.BLACK);
objTVSelectedAction.setTextSize(TypedValue.COMPLEX_UNIT_DIP,18);
objTVSelectedAction.setText("Scroll Test");
objTVSelectedAction.setTypeface(null, Typeface.BOLD);
objTVSelectedAction.setPadding(4, 0, 4, 0);
objTVSelectedAction.setId(1004);
objRLSelectedActionBar.addView(objTVSelectedAction);
objRLBody.addView(objRLSelectedActionBar);
/* header portion ends here*/
/* Relative layout which hold scroll view*/
RelativeLayout objRLScrollView = new RelativeLayout(this);
objRLScrollView.setId(1005);
objRLScrollView.setBackgroundColor(Color.parseColor("#d8e4f3"));
objRLScrollView.setGravity(Gravity.CENTER_VERTICAL|Gravity.CENTER_HORIZONTAL);
RelativeLayout.LayoutParams objRLScrollViewParams = new RelativeLayout.LayoutParams( LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
objRLScrollViewParams.addRule(RelativeLayout.BELOW ,objTVSelectedAction.getId());
ScrollView objScrollView=new ScrollView(this);
objScrollView.setLayoutParams(new ViewGroup.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
objScrollView.setFillViewport(true);
/* contents */
RelativeLayout objRLContent = new RelativeLayout(this);
objRLContent.setId(1006);
objRLContent.setBackgroundColor(Color.parseColor("#d8e4f3"));
objRLContent.setGravity(Gravity.CENTER_VERTICAL|Gravity.CENTER_HORIZONTAL);
RelativeLayout.LayoutParams objRLContentParams = new RelativeLayout.LayoutParams( LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
// objRLContentParams.addRule(RelativeLayout.BELOW ,objTVSelectedAction.getId());
objRLContent.setLayoutParams(objRLContentParams);
/* adding layouts containing Edittext (for testing scroll view) */
RelativeLayout rl2= addEditText(objRLContent,null,1);
RelativeLayout rl3= addEditText(objRLContent,rl2,2);
RelativeLayout rl4= addEditText(objRLContent,rl3,3);
RelativeLayout rl5= addEditText(objRLContent,rl4,4);
RelativeLayout rl6= addEditText(objRLContent,rl5,5);
RelativeLayout rl7= addEditText(objRLContent,rl6,6);
RelativeLayout rl8= addEditText(objRLContent,rl7,7);
RelativeLayout rl9= addEditText(objRLContent,rl8,8);
RelativeLayout rl10= addEditText(objRLContent,rl9,9);
RelativeLayout rl11= addEditText(objRLContent,rl10,10);
RelativeLayout rl12= addEditText(objRLContent,rl11,11);
RelativeLayout rl13= addEditText(objRLContent,rl12,12);
objScrollView.addView(objRLContent); // adding contents to scroll view
objRLScrollView.addView(objScrollView); // Adding scroll view to a relative layout
objRLBody.addView(objRLScrollView); // adding relative layout to body layout
// adding footer to body
RelativeLayout objRLFooter=new RelativeLayout(this);
RelativeLayout.LayoutParams objRLFooterParams=new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT,25);
objRLFooterParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM,objRLBody.getId());
objRLFooter.setLayoutParams(objRLFooterParams);
objRLFooter.setBackgroundColor(Color.parseColor("#2e4862"));
objRLFooter.setGravity(Gravity.CENTER);
objRLBody.addView(objRLFooter);
this.setContentView(objRLBody);
}
private RelativeLayout addEditText(RelativeLayout objRLContent,RelativeLayout layoutAbove,int i ) {
RelativeLayout objRLEditText = new RelativeLayout(this);
objRLEditText.setId(1100+i);
RelativeLayout.LayoutParams objRLEditTextParams = new RelativeLayout.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
if(layoutAbove!=null)
objRLEditTextParams.addRule(RelativeLayout.BELOW,layoutAbove.getId());
objRLEditText.setLayoutParams(objRLEditTextParams);
objRLEditText.setPadding(8, 2, 8, 2);
EditText objETData = new EditText(this);
objETData.setId(1300+i);
RelativeLayout.LayoutParams objETDataParams=new RelativeLayout.LayoutParams(200,LayoutParams.WRAP_CONTENT);
objETData.setLayoutParams(objETDataParams);
objETData.setPadding(8, 0, 8, 0);
objETData.setTextSize(TypedValue.COMPLEX_UNIT_DIP,18);
objETData.setText(""+i);
objETData.setSingleLine(true);
objRLEditText.addView(objETData);
objRLContent.addView(objRLEditText);
return objRLEditText;
}
}
以上代码给出如下所示的put
由于存在scrollView,标题布局变得不可见.我的代码出了什么问题？我该怎么做才能获得具有固定页眉和页脚的可滚动内容的布局？请帮助.
1-将ScrollView的高度和宽度设置为match_parent.
2-将Scrollview的顶部和底部填充设置为等于顶部和底部条形高度.
3-将顶部栏的对齐方式设置为alignparenttop
4-将底栏的对齐方式设置为alignparentbottom
注意:如果您想为操作栏提供良好的兼容性库,请考虑使用ActionBarSherlock.