Add a Button dynamically to a LinearLayout in Android
21,786
Solution 1
try like this:
linearLayout.addView(
btn,
new LayoutParams(
LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT)
);
Solution 2
there will only occure an error if linearLayout is null, ensure that layout1 is a valid Item of R.layout.main
Author by
Admin
Updated on April 13, 2020Comments
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Admin about 4 years
I am working on a project that needs to add buttons dynamically. But whenever I run my application the application force closes. I've learned that the problem is when I try to add buttons.
package com.Feras.TestProject; import android.app.Activity; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup.LayoutParams; import android.widget.Button; import android.widget.LinearLayout; public class TestProject extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); AddAll(); // Set Text for the button in the Old Testament } public void AddAll() { LinearLayout linearLayout = (LinearLayout)findViewById(R.id.layout1); Button btn = new Button(this); btn.setText("MyButton"); linearLayout.addView(btn); } }
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Mike almost 11 yearsI would inflate, I dont think adding from code is the best practice