android 以编程方式布局权重
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android Layout weight programmatically
提问by ranjit patel
i have hard-coded the layout_weight on layout xml.but now i want to give the layout_weight and weightSum from java code.
我已经在布局 xml 上对 layout_weight 进行了硬编码。但是现在我想从 java 代码中给出 layout_weight 和 weightSum。
How we do that from our class?
我们如何在课堂上做到这一点？
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="25" >
<TextView
android:id="@+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="5"
android:background="#F51215"
android:paddingLeft="5dip"
android:text="5" />
<TextView
android:id="@+id/textView2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="20"
android:background="#1AC92B"
android:paddingLeft="5dip"
android:text="20" />
</LinearLayout>
回答by Vyacheslav Shylkin
Something like this:
像这样的东西：
......
LinearLayout layout = (LinearLayout)findViewById(YOUR_LAYOT_ID);
layout.setWeightSum(25f);
LinearLayout.LayoutParams lParams = (LinearLayout.LayoutParams) layout.getLayoutParams(); //or create new LayoutParams...
lParams.weight = 0.5f;
.......
someView.setLayoutParams(lParams);
.......
回答by Padma Kumar
//set as like this below for different view set different float value.
myview.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,5f));
回答by Jeppe
I just wanted to add an example of how to use the weightsum with e.g a TableRow with TextViews inside:
我只是想添加一个示例，说明如何将权重与例如带有 TextViews 的 TableRow 一起使用：
TableRow row = new TableRow(this);
TableRow.LayoutParams params1 = new TableRow.LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT, 10f);
row.setLayoutParams(params1);
row.setPadding(10, 10, 10, 10);
row.setBackgroundColor(R.color.black);
TextView tv = new TextView(this);
TableRow.LayoutParams params2 = new TableRow.LayoutParams(0, LayoutParams.WRAP_CONTENT, 6f);
tv.setLayoutParams(params2);
tv.setTextSize(30);
tv.setBackgroundResource(R.color.white);
TextView tv2 = new TextView(this);
TableRow.LayoutParams params3 = new TableRow.LayoutParams(0, LayoutParams.MATCH_PARENT, 2f);
tv2.setLayoutParams(params3);
tv2.setBackgroundResource(R.color.green);
TextView tv3 = new TextView(this);
TableRow.LayoutParams params4 = new TableRow.LayoutParams(0, LayoutParams.MATCH_PARENT, 2f);
tv3.setLayoutParams(params4);
tv3.setBackgroundResource(R.color.blue);
Produces the TableRow underneath. The parent whose weightsum is 10, and the children's widths are then equal to 60%, 20% and 20% of the width. The height is here determined by the TextView, tv, which has a height of 30. Hope it helps someone. :-)
在下面生成 TableRow。weightsum 为 10 的父级，然后子级的宽度等于宽度的 60%、20% 和 20%。这里的高度由 TextView、tv 决定，高度为 30。希望它可以帮助某人。:-)
回答by Ajji
Here's how you set it.
这是你如何设置它。
LinearLayout yourLayout=(LinearLayout)findViewById(R.id.container);
yourLayout.setWeightSum(0.6f);
回答by Vivek Barai
Dynamically Generate TextView with Weight using LinearLayout
使用 LinearLayout 动态生成带权重的 TextView
LinearLayout lin_hoizontal = new LinearLayout(context);
lin_hoizontal.setOrientation(LinearLayout.HORIZONTAL);
lin_hoizontal.setLayoutParams(new android.widget.LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT, 10f));
lin_hoizontal.setPadding((int) context.getResources().getDimension(R.dimen.d_8), (int) context.getResources().getDimension(R.dimen.d_2), (int) context.getResources().getDimension(R.dimen.d_8), (int) context.getResources().getDimension(R.dimen.d_2));
android.widget.LinearLayout.LayoutParams params_label = new android.widget.LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 2.5f);
TextView txt_label = new TextView(context);
txt_label.setTextColor(context.getResources().getColor(R.color.listing_header_txt_color));//your text color
txt_label.setTextSize(TypedValue.COMPLEX_UNIT_PX, context.getResources().getDimension(R.dimen.d_13));
txt_label.setTypeface(Typeface.create("sans-serif-medium", Typeface.NORMAL));
txt_label.setLayoutParams(params_label);
txt_label.setPadding(0, 0, (int) context.getResources().getDimension(R.dimen.d_2), 0);
txt_label.setText("Label");
android.widget.LinearLayout.LayoutParams params_value = new android.widget.LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 7.5f);
TextView txt_value = new TextView(context);
txt_value.setTextColor(context.getResources().getColor(R.color.listing_header_txt_color));
txt_value.setTextSize(TypedValue.COMPLEX_UNIT_PX, context.getResources().getDimension(R.dimen.d_13));
txt_value.setTypeface(Typeface.create("sans-serif-light", Typeface.NORMAL));
txt_value.setLayoutParams(params_value);
txt_value.setPadding((int) context.getResources().getDimension(R.dimen.d_2), 0, 0, 0);
txt_value.setText("Value");
lin_hoizontal.addView(txt_label);
lin_hoizontal.addView(txt_value);
lin_hoizontal.addView(lin_main);
回答by Chuck
I like Ajii's answer or:
我喜欢 Ajii 的回答或：
((LinearLayout)view).setWeightSum(n);
and for individual view weight:
对于个人视图权重：
((LinearLayout.LayoutParams)view.getLayoutParams()).weight = n;
of course you can do..
LinearLayout view = findViewById(R.id.view_name);
(and drop the dynamic casting (LinearLayout))or substitute...………..
findViewById(R.id.view_name)for view above.
当然你可以做..
LinearLayout view = findViewById(R.id.view_name);
（并删除动态转换（LinearLayout））或替代………………..
findViewById(R.id.view_name)上面的视图。
These both worked for me. And if you want value in dimens file:
这些都对我有用。如果你想要尺寸文件中的值：
<item name="new_weight" format="float" type="dimen">(your number)</item>
and: float n = getResources().getFloat(R.dimen.new_weight);
和： float n = getResources().getFloat(R.dimen.new_weight);
I'm sure you already know most of this but... I was a newbie once and I always appreciated the extra descriptions.
我相信你已经知道了大部分内容，但是......我曾经是一个新手，我总是很欣赏额外的描述。
