blocks|key|1232666|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1232667|...
View+view+=+inflater.inflate(R.layout.active_slide,+this);
view.setMinimumWidth(200);|code-block|syntax|javascript|1232668|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>try a this one:</p>

<pre><code>...
View view = inflater.inflate(R.layout.active_slide, this);
view.setMinimumWidth(200);
</code></pre>


blocks|key|1232715|text|this.setLayoutParams(new+LinearLayout.LayoutParams(LayoutParams.FILL_PARENT,+theSizeIWant));|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1232716|问题解决了！|unstyled|1232717|注意:一定要使用父布局的LayoutParams。我的是LinearLayout.LayoutParams！|offset|length|style|CODE|1232718|entityMap^0|0|0|C|C|S|P|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|P|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|Q|8|@$I|R|J|S|K|L]|$I|T|J|U|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|F|7|V|8|@]|9|@]|A|$]]]|N|$]]

<pre><code>this.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, theSizeIWant));
</code></pre>

<p>Problem solved! </p>

<p>NOTE: Be sure to use the parent Layout's <code>LayoutParams</code>. Mine is <code>LinearLayout.LayoutParams</code>!</p>


blocks|key|1018122|text|这对我来说很有效：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1018123|ViewGroup.LayoutParams+params+=+layout.getLayoutParams();
params.height+=+customHeight;
layout.requestLayout();|code-block|syntax|javascript|1018124|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>This works for me:</p>

<pre><code>ViewGroup.LayoutParams params = layout.getLayoutParams();
params.height = customHeight;
layout.requestLayout();
</code></pre>


blocks|key|1232754|text|我使用这种方法来增加自定义视图的宽度。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1232755|customDrawingView.post(new+Runnable()+{
++++++++++++++++++++++++++++@Override
++++++++++++++++++++++++++++public+void+run()+{
++++++++++++++++++++++++++++++++View+view_instance+=+customDrawingView;
++++++++++++++++++++++++++++++++android.view.ViewGroup.LayoutParams+params+=+view_instance
++++++++++++++++++++++++++++++++++++++++.getLayoutParams();
++++++++++++++++++++++++++++++++int+newLayoutWidth+=+customDrawingView
++++++++++++++++++++++++++++++++++++++++.getWidth()
++++++++++++++++++++++++++++++++++++++++%2B+customDrawingView.getWidth();
++++++++++++++++++++++++++++++++params.width+=+newLayoutWidth;
++++++++++++++++++++++++++++++++view_instance.setLayoutParams(params);
++++++++++++++++++++++++++++++++screenWidthBackup+=+params.width;
++++++++++++++++++++++++++++}
++++++++++++++++++++++++});|code-block|syntax|javascript|1232756|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>I used this way to increase width of custom view</p>

<pre><code>customDrawingView.post(new Runnable() {
                            @Override
                            public void run() {
                                View view_instance = customDrawingView;
                                android.view.ViewGroup.LayoutParams params = view_instance
                                        .getLayoutParams();
                                int newLayoutWidth = customDrawingView
                                        .getWidth()
                                        + customDrawingView.getWidth();
                                params.width = newLayoutWidth;
                                view_instance.setLayoutParams(params);
                                screenWidthBackup = params.width;
                            }
                        });
</code></pre>


blocks|key|1018182|text|我是这样解决的..。我基本上在xml文件中有一个简单的视图。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1018183|+View+viewname+=+findViewById(R.id.prod_extra);
+++++++++++++prodExtra.getLayoutParams().height=64;|code-block|syntax|javascript|1018184|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>I solved it this way.. I have basically a simple view inside xml file.</p>

<pre><code> View viewname = findViewById(R.id.prod_extra);
             prodExtra.getLayoutParams().height=64;
</code></pre>


blocks|key|1232848|text|下面是来自@herbertD的上述解决方案的一个更通用的版本：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1232849|private+void+resizeView(View+view,+int+newWidth,+int+newHeight)+{+
++++try+{+
++++++++Constructor<?+extends+LayoutParams>+ctor+=+view.getLayoutParams().getClass().getDeclaredConstructor(int.class,+int.class);+
++++++++view.setLayoutParams(ctor.newInstance(newWidth,+newHeight));+++
++++}+catch+(Exception+e)+{+
++++++++e.printStackTrace();+
++++}
}|code-block|syntax|javascript|1232850|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>Here's a more generic version of the solution above from @herbertD : </p>

<pre><code>private void resizeView(View view, int newWidth, int newHeight) { 
    try { 
        Constructor&lt;? extends LayoutParams&gt; ctor = view.getLayoutParams().getClass().getDeclaredConstructor(int.class, int.class); 
        view.setLayoutParams(ctor.newInstance(newWidth, newHeight));   
    } catch (Exception e) { 
        e.printStackTrace(); 
    }
}
</code></pre>


blocks|key|1018246|text|如果要覆盖onMeasure，请不要忘记更新新大小|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1018247|@Override
protected+void+onMeasure(int+widthMeasureSpec,+int+heightMeasureSpec)+{
++++setMeasuredDimension(newWidth,+newHeight);
}|code-block|syntax|javascript|1018248|entityMap^0|5|9|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|$]]

<p>if you are overriding <code>onMeasure</code>, don't forget to update the new sizes</p>

<pre><code>@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    setMeasuredDimension(newWidth, newHeight);
}
</code></pre>


blocks|key|1018311|text|这就是我如何做到这一点的。在Sileria+answer中，他/她执行了以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1018312|ViewGroup.LayoutParams+params+=+layout.getLayoutParams();
params.height+=+customHeight;
layout.requestLayout();|code-block|syntax|javascript|1018313|这是正确的，但它希望我们以pixels为单位给出高度，但我想给出我想要的高度的dp，所以我添加了：|style|CODE|1018314|public+int+convertDpToPixelInt(float+dp,+Context+context)+{
++++return+(int)+(dp+*+(((float)+context.getResources().getDisplayMetrics().densityDpi)+/+160.0f));
}|1018315|所以它看起来像这样：|1018316|ViewGroup.LayoutParams+params+=+layout.getLayoutParams();
params.height+=+convertDpToPixelInt(50,+getContext());
layout.requestLayout();|1018317|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/15661239/8199772^0|E|7|0|0|0|D|6|13|2|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]]|C|$]]|$1|D|3|E|5|F|7|14|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|15|8|@$A|16|B|17|K|L]|$A|18|B|19|K|L]]|9|@]|C|$]]|$1|M|3|N|5|F|7|1A|8|@]|9|@]|C|$G|H]]|$1|O|3|P|5|6|7|1B|8|@]|9|@]|C|$]]|$1|Q|3|R|5|F|7|1C|8|@]|9|@]|C|$G|H]]|$1|S|3|-4|5|6|7|1D|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]]]

<p>This is how I achieved this. In <a href="https://stackoverflow.com/a/15661239/8199772">Sileria</a> answer he/she did the following:</p>

<pre><code>ViewGroup.LayoutParams params = layout.getLayoutParams();
params.height = customHeight;
layout.requestLayout();
</code></pre>

<p>This is correct, but it expects us to give the height in <code>pixels</code>, but I wanted to give the <code>dp</code> I want the height to be so I added:</p>

<pre><code>public int convertDpToPixelInt(float dp, Context context) {
    return (int) (dp * (((float) context.getResources().getDisplayMetrics().densityDpi) / 160.0f));
}
</code></pre>

<p>So it will look like this:</p>

<pre><code>ViewGroup.LayoutParams params = layout.getLayoutParams();
params.height = convertDpToPixelInt(50, getContext());
layout.requestLayout();
</code></pre>


blocks|key|1232999|text|在Kotlin中，您可以使用ktx+extensions|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1233000|yourView.updateLayoutParams+{
+++height+=+<YOUR_HEIGHT>
}|code-block|syntax|javascript|1233001|entityMap|0|LINK|mutability|MUTABLE|url|https://android.github.io/android-ktx/core-ktx/androidx.view/index.html^0|E|E|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

<p>In Kotlin, you can use the <a href="https://android.github.io/android-ktx/core-ktx/androidx.view/index.html" rel="noreferrer">ktx extensions</a>:</p>

<pre><code>yourView.updateLayoutParams {
   height = &lt;YOUR_HEIGHT&gt;
}
</code></pre>


blocks|key|1018442|text|这是我所做的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1018443|View+myView;++
myView.getLayoutParams().height+=+32;++
myView.getLayoutParams().width+=+32;|code-block|syntax|javascript|1018444|如果存在此视图所属的视图组，则可能还需要调用yourViewGroup.requestLayout()才能使其生效。|1018445|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|$]]

<p>This is what I did:</p>
<pre><code>View myView;  
myView.getLayoutParams().height = 32;  
myView.getLayoutParams().width = 32;
</code></pre>
<p>If there is a view group that this view belongs to, you may also need to call yourViewGroup.requestLayout() for it to take effect.</p>


blocks|key|1233082|text|使用Kotlin和使用dp单元：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1233083|myView.updateLayoutParams+{
++++val+pixels+=+TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,+200f,+context.resources.displayMetrics)
++++height+=+pixels.toInt()
}|code-block|syntax|javascript|1233084|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>With Kotlin and using dp unit:</p>
<pre><code>myView.updateLayoutParams {
    val pixels = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 200f, context.resources.displayMetrics)
    height = pixels.toInt()
}
</code></pre>


blocks|key|1233134|text|Kotlin|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1233135|1233136|updateLayoutParams：|1233137|val+view+=+layoutInflater.inflate(R.layout.cell,+binding.ssss,+false).apply+{
++++++++++++id+=+View.generateViewId()

++++++++++++updateLayoutParams+{+
++++++++++++++++height+=+200
++++++++++++++++width+=+400+
++++++++++++}

++++++++}
binding.ssss.addView(view)|code-block|syntax|javascript|1233138|1233139|或|1233140|1233141|layoutParams：|1233142|val+view+=+layoutInflater.inflate(R.layout.cell,+binding.ssss,+false).apply+{
++++++++++++id+=+View.generateViewId()
++++++++++++
++++++++++++layoutParams.width+=+200
++++++++++++layoutParams.height+=+200
++++++++++++
++++++++}
binding.ssss.addView(view)|1233143|1233144|PS。Vel_daN:热爱你的工作。|1233145|entityMap^0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|X|8|@]|9|@]|A|$]]|$1|C|3|D|5|6|7|Y|8|@]|9|@]|A|$]]|$1|E|3|F|5|G|7|Z|8|@]|9|@]|A|$H|I]]|$1|J|3|-4|5|6|7|10|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|11|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|12|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|13|8|@]|9|@]|A|$]]|$1|P|3|Q|5|G|7|14|8|@]|9|@]|A|$H|I]]|$1|R|3|-4|5|6|7|15|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|V|$]]

<h1>Kotlin</h1>
<hr />
<h2>updateLayoutParams:</h2>
<pre><code>val view = layoutInflater.inflate(R.layout.cell, binding.ssss, false).apply {
            id = View.generateViewId()

            updateLayoutParams { 
                height = 200
                width = 400 
            }

        }
binding.ssss.addView(view)
</code></pre>
<hr />
<h2>OR</h2>
<hr />
<h2>layoutParams:</h2>
<pre><code>val view = layoutInflater.inflate(R.layout.cell, binding.ssss, false).apply {
            id = View.generateViewId()
            
            layoutParams.width = 200
            layoutParams.height = 200
            
        }
binding.ssss.addView(view)
</code></pre>
<hr />
<p>PS. Vel_daN: Love what You DO .</p>


<p>I am coding a custom view, extended from RelativeLayout, and I want to resize it programmatically, How can I do?</p>

<p>the custom view Class is something like:</p>

<pre><code>public ActiveSlideView(Context context, AttributeSet attr){
        super(context, attr);
        LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        if(inflater != null){       
            inflater.inflate(R.layout.active_slide, this);
        }
</code></pre>


How to resize a custom view programmatically?

Kotlin

我正在编写一个自定义视图，它是从RelativeLayout扩展而来的，我想通过编程来调整它的大小，我该怎么做？自定义视图Class类似于：public ActiveSlideView(Context context, AttributeSet attr){        super(context, attr);  ...

问如何以编程方式调整自定义视图的大小？
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