blocks|key|990481|text|尝试使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|990482|LinearLayout+linearLayout+=+(LinearLayout)findViewById(R.id.info);
...
linearLayout.addView(valueTV);|code-block|syntax|javascript|990483|还要确保您正在创建的布局参数是LinearLayout.LayoutParams...|990484|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

try using

<pre><code>LinearLayout linearLayout = (LinearLayout)findViewById(R.id.info);
...
linearLayout.addView(valueTV);
</code></pre>

also make sure that the layout params you're creating are LinearLayout.LayoutParams...

blocks|key|1204997|text|你需要通过它的布局资源来访问布局，而不是一个不能保证唯一的id资源。资源引用应该类似于R.layout.my_cool_layout，上面的XML布局存储在res/+layout+/myCoollayout.xml中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1204998|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

You need to access the layout via it's layout resource, not an id resource which is not guaranteed unique. The resource reference should look like R.layout.my_cool_layout where your above XML layout is stored in res/layout/my_cool_layout.xml.

blocks|key|990666|text|嘿，我已经检查了你的代码，你的代码中没有严重的错误。这是完整的代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|990667|main.xml:-|990668|<?xml+version="1.0"+encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:id="@%2Bid/info"
android:layout_height="wrap_content"+
android:orientation="vertical">
</LinearLayout>|code-block|syntax|javascript|990669|这是Stackoverflow.java|990670|import+android.app.Activity;
import+android.os.Bundle;
import+android.view.View;
import+android.view.ViewGroup.LayoutParams;
import+android.widget.LinearLayout;
import+android.widget.TextView;

public+class+Stackoverflow+extends+Activity+{
++++/**+Called+when+the+activity+is+first+created.+*/
++++@Override
++++public+void+onCreate(Bundle+savedInstanceState)+{
++++++++super.onCreate(savedInstanceState);
++++++++setContentView(R.layout.main);
++++++++View+linearLayout+=++findViewById(R.id.info);
++++++++//LinearLayout+layout+=+(LinearLayout)+findViewById(R.id.info);

++++++++TextView+valueTV+=+new+TextView(this);
++++++++valueTV.setText("hallo+hallo");
++++++++valueTV.setId(5);
++++++++valueTV.setLayoutParams(new+LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT));

++++++++((LinearLayout)+linearLayout).addView(valueTV);
++++}
}|990671|复制此代码，然后运行它。它是完全没有错误的。多保重。|990672|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Hey i have checked your code, there is no serious error in your code. this is complete code:

main.xml:-

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:id="@+id/info"
android:layout_height="wrap_content" 
android:orientation="vertical"&gt;
&lt;/LinearLayout&gt;
</code></pre>

this is Stackoverflow.java

<pre><code>import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.LinearLayout;
import android.widget.TextView;

public class Stackoverflow extends Activity {
 /** Called when the activity is first created. */
 @Override
 public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);
 View linearLayout = findViewById(R.id.info);
 //LinearLayout layout = (LinearLayout) findViewById(R.id.info);

 TextView valueTV = new TextView(this);
 valueTV.setText("hallo hallo");
 valueTV.setId(5);
 valueTV.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT));

 ((LinearLayout) linearLayout).addView(valueTV);
 }
}
</code></pre>

copy this code, and run it. it is completely error free.
take care...

blocks|key|1205119|text|您可以通过编程方式将TextView添加到线性布局，如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1205120|LinearLayout+linearLayout+=+(LinearLayout)+findViewById(R.id.mylayout);
TextView+txt1+=+new+TextView(MyClass.this);
linearLayout.setBackgroundColor(Color.TRANSPARENT);
linearLayout.addView(txt1);|code-block|syntax|javascript|1205121|entityMap^0|A|8|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

You can add a <code>TextView</code> to your linear layout programmatically like this:

<pre><code>LinearLayout linearLayout = (LinearLayout) findViewById(R.id.mylayout);
TextView txt1 = new TextView(MyClass.this);
linearLayout.setBackgroundColor(Color.TRANSPARENT);
linearLayout.addView(txt1);
</code></pre>

blocks|key|990746|text|LinearLayout.LayoutParams+layoutParams+;
layoutParams=+new+LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,+LinearLayout.LayoutParams.WRAP_CONTENT);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|990747|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>LinearLayout.LayoutParams layoutParams ;
layoutParams= new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
</code></pre>

blocks|key|1205147|text|for(int+j=0;j<30;j%2B%2B)+{
++++LinearLayout+childLayout+=+new+LinearLayout(MainActivity.this);
++++LinearLayout.LayoutParams+linearParams+=+new+LinearLayout.LayoutParams(
++++++++LayoutParams.WRAP_CONTENT,
++++++++LayoutParams.WRAP_CONTENT);
++++childLayout.setLayoutParams(linearParams);

++++TextView+mType+=+new+TextView(MainActivity.this);
++++TextView+mValue+=+new+TextView(MainActivity.this);

++++mType.setLayoutParams(new+TableLayout.LayoutParams(
++++++++LayoutParams.WRAP_CONTENT,
++++++++LayoutParams.WRAP_CONTENT,+1f));
++++mValue.setLayoutParams(new+TableLayout.LayoutParams(
++++++++LayoutParams.WRAP_CONTENT,
++++++++LayoutParams.WRAP_CONTENT,+1f));

++++mType.setTextSize(17);
++++mType.setPadding(5,+3,+0,+3);
++++mType.setTypeface(Typeface.DEFAULT_BOLD);
++++mType.setGravity(Gravity.LEFT+%7C+Gravity.CENTER);

++++mValue.setTextSize(16);
++++mValue.setPadding(5,+3,+0,+3);
++++mValue.setTypeface(null,+Typeface.ITALIC);
++++mValue.setGravity(Gravity.LEFT+%7C+Gravity.CENTER);

++++mType.setText("111");
++++mValue.setText("111");

++++childLayout.addView(mValue,+0);
++++childLayout.addView(mType,+0);

++++linear.addView(childLayout);
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1205148|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>for(int j=0;j&lt;30;j++) {
 LinearLayout childLayout = new LinearLayout(MainActivity.this);
 LinearLayout.LayoutParams linearParams = new LinearLayout.LayoutParams(
 LayoutParams.WRAP_CONTENT,
 LayoutParams.WRAP_CONTENT);
 childLayout.setLayoutParams(linearParams);

 TextView mType = new TextView(MainActivity.this);
 TextView mValue = new TextView(MainActivity.this);

 mType.setLayoutParams(new TableLayout.LayoutParams(
 LayoutParams.WRAP_CONTENT,
 LayoutParams.WRAP_CONTENT, 1f));
 mValue.setLayoutParams(new TableLayout.LayoutParams(
 LayoutParams.WRAP_CONTENT,
 LayoutParams.WRAP_CONTENT, 1f));

 mType.setTextSize(17);
 mType.setPadding(5, 3, 0, 3);
 mType.setTypeface(Typeface.DEFAULT_BOLD);
 mType.setGravity(Gravity.LEFT | Gravity.CENTER);

 mValue.setTextSize(16);
 mValue.setPadding(5, 3, 0, 3);
 mValue.setTypeface(null, Typeface.ITALIC);
 mValue.setGravity(Gravity.LEFT | Gravity.CENTER);

 mType.setText("111");
 mValue.setText("111");

 childLayout.addView(mValue, 0);
 childLayout.addView(mType, 0);

 linear.addView(childLayout);
}
</code></pre>

blocks|key|1205203|text|在将TextView动态添加到LinearLayout时，您应该使用类似下面的代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1205204|LinearLayout+linearLayout+=+getActivity().findViewById(R.id.infoLayout);

TextView+valueTV+=+new+TextView(context);
valueTV.setText("hallo+hallo");
valueTV.setId(Integer.parseInt("5"));
valueTV.setLayoutParams(new+LinearLayout.LayoutParams(
+++++++LinearLayout.LayoutParams.FILL_PARENT,
+++++++LinearLayout.LayoutParams.WRAP_CONTENT));

linearLayout.addView(valueTV);|code-block|syntax|javascript|1205205|getActivity()用于内部片段，您可以针对您所在的每个实例使用上下文或任何类似的内容。|1205206|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You should use something similar to this for adding TextView to LinearLayout dynamically:

<pre><code>LinearLayout linearLayout = getActivity().findViewById(R.id.infoLayout);

TextView valueTV = new TextView(context);
valueTV.setText("hallo hallo");
valueTV.setId(Integer.parseInt("5"));
valueTV.setLayoutParams(new LinearLayout.LayoutParams(
 LinearLayout.LayoutParams.FILL_PARENT,
 LinearLayout.LayoutParams.WRAP_CONTENT));

linearLayout.addView(valueTV);
</code></pre>

getActivity() is used for inside Fragments, you can use context or anything similar per each instance you are inside.

I am trying to add <code>TextViews</code> to my xml-defined layout in code.
I have a xml-sheet, where a lot of <code>Views</code> are defined. But I have to add some views in code, so a create a <code>LinearLayout</code> in the xml-sheet:

<pre><code>&lt;LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:id="@+id/info"
android:layout_height="wrap_content" 
android:orientation="vertical"&gt;
&lt;/LinearLayout&gt;
</code></pre>

And in this layout, I like to add my <code>TextView</code>:

<pre><code> View linearLayout = findViewById(R.id.info);
 //LinearLayout layout = (LinearLayout) findViewById(R.id.info);


 TextView valueTV = new TextView(this);
 valueTV.setText("hallo hallo");
 valueTV.setId(5);
 valueTV.setLayoutParams(new LayoutParams(
 LayoutParams.FILL_PARENT,
 LayoutParams.WRAP_CONTENT));

 ((LinearLayout) linearLayout).addView(valueTV);
</code></pre>

But I only get the following error message:

<pre><code>: java.lang.ClassCastException: android.widget.TextView
</code></pre>

How can I do it?

Thanks for you help.
Martin

How to add a TextView to LinearLayout in Android

我正在尝试用代码将TextViews添加到我的xml定义的布局中。我有一个xml-sheet，其中定义了很多Views。但是我必须在代码中添加一些视图，所以在xml-sheet中创建一个LinearLayout：<LinearLayoutxmlns:android="http://schemas.android.com...

问如何在安卓系统中为LinearLayout添加TextView
EN

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