android - 以编程方式设置 TextView 的布局权重

Question

我正在尝试动态创建TableRow对象并将它们添加到TableLayout. TableRow对象有 2 个项目， a和TextViewa CheckBox。TextView项目需要将其布局权重设置为 1 才能将项目推到CheckBox最右侧。

我找不到有关如何以编程方式设置TextView项目的布局权重的文档。

score 362 · Accepted Answer

你必须使用TableLayout.LayoutParams这样的东西：

TextView tv = new TextView(v.getContext());
tv.setLayoutParams(new TableLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 1f));

最后一个参数是重量。

score 99 · Accepted Answer

答案是您必须使用 TableRow.LayoutParams，而不是 LinearLayout.LayoutParams 或任何其他 LayoutParams。

TextView tv = new TextView(v.getContext());
LayoutParams params = new TableRow.LayoutParams(0, LayoutParams.WRAP_CONTENT, 1f);
tv.setLayoutParams(params);

不同的 LayoutParams 是不可互换的，如果你使用了错误的，那么似乎什么都不会发生。文本视图的父级是表格行，因此：

http://developer.android.com/reference/android/widget/TableRow.LayoutParams.html

score 40 · Accepted Answer

在前面的答案中，权重被传递给新的 SomeLayoutType.LayoutParams 对象的构造函数。在许多情况下，使用现有对象更方便——它有助于避免处理我们不感兴趣的参数。

一个例子：

// 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);

score 17 · Accepted Answer

TextView txtview = new TextView(v.getContext());
LayoutParams params = new LinearLayout.LayoutParams(0, LayoutParams.WRAP_CONTENT, 1f);
txtview.setLayoutParams(params);

1f 表示为 weight=1；你可以给 2f 或 3f，视图将根据空间移动

score 13 · Accepted Answer

只需在该布局中设置布局参数，例如

创建参数变量

 android.widget.LinearLayout.LayoutParams params = new android.widget.LinearLayout.LayoutParams(
            LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT, 1f);

1f 是权重变量

设置您的小部件或布局

 TextView text = (TextView) findViewById(R.id.text);
 text.setLayoutParams(params);

score 11 · Accepted Answer

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);

score 10 · Accepted Answer

这应该对你有用

LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT LayoutParams.MATCH_PARENT);

param.weight=1.0f;

score 7 · Accepted Answer

你也可以像这样单独给重量，

LayoutParams lp1 = new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT);

 lp1.weight=1;

score 6 · Accepted Answer

这对我有用，我希望它也对你有用

首先为父视图设置 LayoutParams：

myTableLayout.setLayoutParams(new TableLayout.LayoutParams(TableLayout.LayoutParams.FILL_PARENT,
                TableLayout.LayoutParams.FILL_PARENT));

然后为 TextView (child) 设置：

 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);

score 2 · Accepted Answer

经过4个小时的奋战。最后，这段代码对我有用。

3 列连续存在。

  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));

score 1 · Accepted Answer

还有另一种方法可以做到这一点。如果您只需要设置一个参数，例如“高度”：

TextView textView = (TextView)findViewById(R.id.text_view);
ViewGroup.LayoutParams params = textView.getLayoutParams();
params.height = ViewGroup.LayoutParams.WRAP_CONTENT;
textView.setLayoutParams(params);

score -1 · Accepted Answer

我在使用与此非常相似的解决方案时遇到了相当大的困难：尝试在 TableRow 中有两个按钮，每个按钮都是屏幕宽度的一半。无论出于何种原因，左侧按钮总是大约为宽度的 70%，右侧按钮为 30%。调用 table_layout.setStretchAllColumns(true) 没有任何效果，也没有将按钮的宽度设置为屏幕的一半，也没有设置它们的布局权重。

我最终得到的解决方案是在 TableRows 中嵌套一个 LinearLayout，它确实考虑了按钮宽度的值。

    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;
        }

android - 以编程方式设置 TextView 的布局权重

12 回答 12

Related

Reference