问题
I\'m trying to dynamically create TableRow
objects and add them to a TableLayout
.
The TableRow
objects has 2 items, a TextView
and a CheckBox
. The TextView
items need to have their layout weight set to 1 to push the CheckBox
items to the far right.
I can\'t find documentation on how to programmatically set the layout weight of a TextView
item.
回答1:
You have to use TableLayout.LayoutParams
with something like this:
TextView tv = new TextView(v.getContext());
tv.setLayoutParams(new TableLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 1f));
The last parameter is the weight.
回答2:
The answer is that you have to use TableRow.LayoutParams, not LinearLayout.LayoutParams or any other LayoutParams.
TextView tv = new TextView(v.getContext());
LayoutParams params = new TableRow.LayoutParams(0, LayoutParams.WRAP_CONTENT, 1f);
tv.setLayoutParams(params);
The different LayoutParams are not interchangeable and if you use the wrong one then nothing seems to happen. The text view's parent is a table row, hence:
http://developer.android.com/reference/android/widget/TableRow.LayoutParams.html
回答3:
In the earlier answers weight is passed to the constructor of a new SomeLayoutType.LayoutParams object. Still in many cases it's more convenient to use existing objects - it helps to avoid dealing with parameters we are not interested in.
An example:
// Get our View (TextView or anything) object:
View v = findViewById(R.id.our_view);
// Get params:
LinearLayout.LayoutParams loparams = (LinearLayout.LayoutParams) v.getLayoutParams();
// Set only target params:
loparams.height = 0;
loparams.weight = 1;
v.setLayoutParams(loparams);
回答4:
TextView txtview = new TextView(v.getContext());
LayoutParams params = new LinearLayout.LayoutParams(0, LayoutParams.WRAP_CONTENT, 1f);
txtview.setLayoutParams(params);
1f is denotes as weight=1; you can give 2f or 3f, views will move accoding to the space
回答5:
just set layout params in that layout like
create param variable
android.widget.LinearLayout.LayoutParams params = new android.widget.LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT, 1f);
1f is weight variable
set your widget or layout like
TextView text = (TextView) findViewById(R.id.text);
text.setLayoutParams(params);
回答6:
TextView text = new TextView(v.getContext());
text.setLayoutParams(new TableLayout.LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT, 1f));
(OR)
TextView tv = new TextView(v.getContext());
LayoutParams params = new TableRow.LayoutParams(0, LayoutParams.WRAP_CONTENT, 1f);
tv.setLayoutParams(params);
1f is refered as weight=1; according to your need you can give 2f or 3f, views will move accoding to the space. For making specified distance between views in Linear layout use weightsum for "LinearLayout".
LinearLayout ll_Outer= (LinearLayout ) view.findViewById(R.id.linearview);
LinearLayout llInner = new LinearLayout(this);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FillParent, LinearLayout.LayoutParams.WrapContent);
llInner.Orientation = Orientation.Horizontal;
llInner.WeightSum = 2;
ll_Outer.AddView(llInner);
回答7:
You can also give weight separately like this ,
LayoutParams lp1 = new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT);
lp1.weight=1;
回答8:
This should works to you
LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT LayoutParams.MATCH_PARENT);
param.weight=1.0f;
回答9:
This work for me, and I hope it will work for you also
Set the LayoutParams for the parent view first:
myTableLayout.setLayoutParams(new TableLayout.LayoutParams(TableLayout.LayoutParams.FILL_PARENT,
TableLayout.LayoutParams.FILL_PARENT));
then set for the TextView (child):
TableLayout.LayoutParams textViewParam = new TableLayout.LayoutParams
(TableLayout.LayoutParams.WRAP_CONTENT,
TableLayout.LayoutParams.WRAP_CONTENT,1f);
//-- set components margins
textViewParam.setMargins(5, 0, 5,0);
myTextView.setLayoutParams(textViewParam);
回答10:
There is another way to do this. In case you need to set only one parameter, for example 'height':
TextView textView = (TextView)findViewById(R.id.text_view);
ViewGroup.LayoutParams params = textView.getLayoutParams();
params.height = ViewGroup.LayoutParams.WRAP_CONTENT;
textView.setLayoutParams(params);
回答11:
After strugling for 4 hours. Finally, This code worked for me.
3 Columns are there in a row.
TextView serialno = new TextView(UsersActivity.this);
TextView userId = new TextView(UsersActivity.this);
TextView name = new TextView(UsersActivity.this);
serialno.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT, 1f));
userId.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT, 1f));
name.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT, 1f));
回答12:
I had a fair amount of difficulty with a solution something very similar to this: trying to have two buttons in a TableRow, with each being half the screen width. For whatever reason, the left button would always be about 70% of the width, and the right button 30%. Calling table_layout.setStretchAllColumns(true) had no effect, nor did setting the button's width to half the screen, nor setting their layout weight.
The solution I ended up with was nesting a LinearLayout in the TableRows, which did take into account the value of the buttons' width.
TableLayout layout = new TableLayout(this);
TableRow top_row = new TableRow(this);
left_button = styleButton();
right_button = styleButton();
LinearLayout toprow_layout = new LinearLayout (this);
toprow_layout.setOrientation(LinearLayout.HORIZONTAL);
toprow_layout.addView (left_button);
toprow_layout.addView(right_button);
toprow.addView(top_layout);
layout.addView(top_row)
private Button styleButton() {
Button btn = new Button (this);
android.view.Display display = ((android.view.WindowManager)getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
btn.setWidth((int)(display.getWidth()/2)); // set width to half
btn.setHeight(((int)display.getHeight()/6)); // set height to whatevs
btn.setText("foo");
return btn;
}
来源:https://stackoverflow.com/questions/3224193/set-the-layout-weight-of-a-textview-programmatically