以编程方式创建布局资源 Kotlin Android [英] Create Layout Resource Programmatically Kotlin Android
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问题描述
我在尝试完全以编程方式制作此布局时遇到问题，每次进程运行都没有成功结束并且应用程序崩溃.
I'm having problems trying to make this Layout totally programmatically, every time the process run end without success and the app crashes.
我试图以编程方式创建的 XML 部分是:
The Part of XML im trying to create programmatically is it :
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="@+id/idImagenPlay0"
android:layout_width="62dp"
android:layout_height="54dp"
android:layout_marginRight="10dp"
android:layout_marginTop="15dp"
android:src="@drawable/ic_action_play" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/idNombre0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="Description"
android:textSize="25sp"
android:textStyle="bold" />
<TextView
android:id="@+id/idInfo0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="15dp"
android:layout_marginRight="10dp"
android:text="Title" />
</LinearLayout>
<ImageView
android:id="@+id/idImagenShare0"
android:layout_width="54dp"
android:layout_height="48dp"
android:layout_alignParentRight="true"
android:layout_marginRight="10dp"
android:layout_marginTop="15dp"
android:src="@drawable/ic_action_share" />
</RelativeLayout>
</LinearLayout>
我正在尝试使用以下 kotlin 代码重新创建它:
I'm trying to recreate it with the following kotlin code:
fun createXmlElement(title:String,description:String){
val parent = LinearLayout(this)
parent.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT)
parent.orientation = LinearLayout.HORIZONTAL
//children of parent linearlayout
val iv = ImageView(this)
val lp = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT)
lp.setMargins(0, 11, 7, 0)
iv.setLayoutParams(lp)
iv.setImageResource(R.drawable.ic_action_play)
iv.getLayoutParams().height = 40;
iv.getLayoutParams().width = 46;
parent.addView(iv); // lo agregamos al layout
val relativeP = RelativeLayout(this)
relativeP.layoutParams = RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
RelativeLayout.LayoutParams.MATCH_PARENT)
val linearCH = LinearLayout(this)
linearCH.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT)
// TextView1
val tv1 = TextView(this)
val lptv1 = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT)
lptv1.setMargins(0, 7, 0, 0)
tv1.setLayoutParams(lptv1)
tv1.setText(title) // nombre de la musica
tv1.setTextSize(TypedValue.COMPLEX_UNIT_SP,25F)
tv1.setTypeface(null, Typeface.BOLD);
// TextView2
val tv2 = TextView(this)
val lptv2 = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT)
lptv2.setMargins(0, 11, 7, 0)
tv2.setLayoutParams(lptv1)
tv2.setText(description) // Descripcion de la musica
tv2.setTextSize(TypedValue.COMPLEX_UNIT_SP, 25F)
tv2.setTypeface(null, Typeface.BOLD);
linearCH.addView(tv1)
linearCH.addView(tv2)
relativeP.addView(linearCH)
// last ImageView
val iv2 = ImageView(this)
val lpiv2 = RelativeLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT)
lpiv2.setMargins(0, 11, 7, 0)
lpiv2.addRule(RelativeLayout.ALIGN_PARENT_RIGHT)
iv2.setLayoutParams(lpiv2)
iv2.setImageResource(R.drawable.ic_action_share)
iv2.getLayoutParams().height = 40;
iv2.getLayoutParams().width = 46;
parent.addView(iv)
parent.addView(relativeP)
parent.addView(iv2)
}
这是我在 logcat 中遇到的错误
This is the error I'm getting in logcat
04-27 10:51:01.224 6973-6973/com.klystru.app.appE/AndroidRuntime: FATAL EXCEPTION: main
Process: com.klystru.app.app, PID: 6973
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.klystru.app.app/com.klystru.app.app.MainActivity}: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2583)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2665)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1499)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:207)
at android.app.ActivityThread.main(ActivityThread.java:5765)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)
Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
at android.view.ViewGroup.addViewInner(ViewGroup.java:4453)
at android.view.ViewGroup.addView(ViewGroup.java:4281)
at android.view.ViewGroup.addView(ViewGroup.java:4222)
at android.view.ViewGroup.addView(ViewGroup.java:4195)
at com.klystru.app.app.MainActivity.createXmlElement(MainActivity.kt:284)
at com.klystru.app.app.MainActivity.onCreate(MainActivity.kt:121)
at android.app.Activity.performCreate(Activity.java:6309)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1113)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2530)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2665)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1499)
at android.os.Handler.dispatchMessage(Handler.java:111)
at android.os.Looper.loop(Looper.java:207)
at android.app.ActivityThread.main(ActivityThread.java:5765)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)
我仍在研究它可能是什么，我怀疑它可能是错误的 LayoutParams，但并不清楚如何以编程方式正确设置这些资源.
I still research what it can be, I'm suspecting it may be wrong LayoutParams, but it's not really clear about how to set up correctly those resources programmatically.
提前致谢.
PD:如果我发现了什么我会更新.
PD: If I found something I will update.
非常欢迎任何帮助！
更新 1.0:
好的，按照 logcat，我必须在孩子的父母中调用 removeView，但我不知道确切的位置.我正在寻找那个.
Ok following the logcat I have to call removeView in child's parent, but I don't know exactly where. I am looking for that.
推荐答案
好的解决方案如下:
只需要在添加子项之前在所有父项上添加 removeAllView
Just need to add removeAllView on all parents before adding the childs
protected fun createXmlElement(title:String,description:String){
val parent = LinearLayout(this)
parent.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT)
parent.orientation = LinearLayout.HORIZONTAL
//children of parent linearlayout
val iv = ImageView(this)
val lp = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT)
lp.setMargins(0, 11, 7, 0)
iv.setLayoutParams(lp)
iv.setImageResource(R.drawable.ic_action_play)
iv.getLayoutParams().height = 40
iv.getLayoutParams().width = 46
parent.addView(iv); // lo agregamos al layout
val relativeP = RelativeLayout(this)
relativeP.layoutParams = RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
RelativeLayout.LayoutParams.MATCH_PARENT)
val linearCH = LinearLayout(this)
linearCH.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT)
// TextView1
val tv1 = TextView(this)
val lptv1 = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT)
lptv1.setMargins(0, 7, 0, 0)
tv1.setLayoutParams(lptv1)
tv1.setText(title) // title
tv1.setTextSize(TypedValue.COMPLEX_UNIT_SP,25F)
tv1.setTypeface(null, Typeface.BOLD)
// TextView2
val tv2 = TextView(this)
val lptv2 = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT)
lptv2.setMargins(0, 11, 7, 0)
tv2.setLayoutParams(lptv1)
tv2.setText(description) // description
tv2.setTextSize(TypedValue.COMPLEX_UNIT_SP, 25F)
tv2.setTypeface(null, Typeface.BOLD)
linearCH.removeAllViews()
linearCH.addView(tv1)
linearCH.addView(tv2)
relativeP.removeAllViews()
relativeP.addView(linearCH)
// last ImageView
val iv2 = ImageView(this)
val lpiv2 = RelativeLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT)
lpiv2.setMargins(0, 11, 7, 0)
lpiv2.addRule(RelativeLayout.ALIGN_PARENT_RIGHT)
iv2.setLayoutParams(lpiv2)
iv2.setImageResource(R.drawable.ic_action_share)
iv2.getLayoutParams().height = 40
iv2.getLayoutParams().width = 46
parent.removeAllViews()
parent.addView(iv)
parent.addView(relativeP)
parent.addView(iv2)
val finalParent = this.findViewById(R.id.contenedor) as ViewGroup
finalParent.addView(parent)
}
感谢 Nsion，logcat 上的错误为我指明了正确的方向！
Thanks NSion, the error on logcat point to me the right direction!
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