Java 动态设置textview的宽度
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set Width dynamically of textview
提问by HimanshuR
In my project, i need to draw rows of textview dynamically according to the data received to show it. To align them properly, i have used Table Row n xml, and called it in java code. Now, in their LayoutParam i have given MATCH_PARENT, but it wraps the text according to the length of data received. Now, i want to fix width of the fields for a tabular view. I do all this process in postExecute method. In this method, i used setWidth function to set it according to the width of header row element.Here, Sno is a view, while size is array containing width of all elements of headerRow.
在我的项目中，我需要根据收到的数据动态绘制文本视图行以显示它。为了正确对齐它们，我使用了 Table Row n xml，并在 java 代码中调用了它。现在，在他们的 LayoutParam 中，我给出了 MATCH_PARENT，但它根据收到的数据长度包装文本。现在，我想修复表格视图的字段宽度。我在 postExecute 方法中完成所有这些过程。在这个方法中，我使用 setWidth 函数根据标题行元素的宽度来设置它。这里，Sno 是一个视图，而 size 是包含 headerRow 的所有元素的宽度的数组。
Sno.setTag(patient);
Sno.setWidth(size[0]);
But it didn't solve this problem, when i tried getWidth to see its width, it was showing its value 0. Then i tried to set this width using LinearLayout.LinearParams
但它并没有解决这个问题，当我尝试 getWidth 查看它的宽度时，它显示的值为 0。然后我尝试使用 LinearLayout.LinearParams 设置这个宽度
LinearLayout.LayoutParams params_sno = new LinearLayout.LayoutParams(size[0],
LinearLayout.LayoutParams.MATCH_PARENT);
Sno.setLayoutParams(params_sno);
but still no benefit, secondaly, if i remove MATCH_PARENT from width of LayoutParams, its width got increased from width of header row element. fields without data are invisible.
但仍然没有好处，其次，如果我从 LayoutParams 的宽度中删除 MATCH_PARENT，它的宽度会从标题行元素的宽度增加。没有数据的字段是不可见的。
采纳答案by Sanket Shah
Try this
尝试这个
TableRow row = new TableRow(activityContext);
TableLayout.LayoutParams td_tr = new TableLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
row.setWeightSum(10);
row.setLayoutParams(td_tr);
row.setGravity(Gravity.CENTER);
row.setBackgroundColor(Color.parseColor("#D2D2D2"));
TextView tv= new TextView(activityContext);
tv.setText(String.valueOf(i));
tv.setTextAppearance(activityContext, style.tvBoldRow);
tv.setLayoutParams(new TableRow.LayoutParams(0 , LayoutParams.WRAP_CONTENT, 1)); // Here you can set weight to your TextView.
tv.setPadding(2, 2, 2, 2);
tv.setGravity(Gravity.CENTER);
row.addView(tv);
回答by shivang Trivedi
try this:
尝试这个：
LinearLayout.LayoutParams Params1 = new LinearLayout.LayoutParams(15,50);
tv.setLayoutParams(Params1);
回答by Shruti
Add the following parameter
添加以下参数
android:weight = "1"
android:weight = "1"
in xml to the textview and set
在 xml 到 textview 并设置
android:layout_width = "0dp".
android:layout_width = "0dp".
I think this should work for you.
我认为这应该对你有用。
Yes you can set weight from the java code.
是的，您可以从 java 代码设置权重。
To set weight from java code :
从java代码设置权重：
LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT, 1.0f);
The last parameter is the weight.
最后一个参数是权重。
回答by Pankaj
As tsp said
正如茶匙所说
LinearLayout.LayoutParams Params1 = new LinearLayout.LayoutParams(15,50);
then while adding it in table layout you have overrided addmethode which takes view and layout params.
然后在将它添加到表格布局中时，您已经覆盖了add采用视图和布局参数的方法。
You can also consider TypedValue.applyDimention() to give values in DP
您还可以考虑 TypedValue.applyDimention() 在 DP 中给出值
LinearLayout.LayoutParams Params1 = new LinearLayout.LayoutParams(TaypedValue.applyDimension(TaypedValue.COMPLEX_UNIT_DIP, 15, objDeisplayMetrics),TaypedValue.applyDimension(TaypedValue.COMPLEX_UNIT_DIP, 50, objDeisplayMetrics));
