TextView不是以编程方式添加到我的布局中

Question

I am trying to add TextViews to LinearLayout programmatically. The amount of TextViews is based on UserInput which he can type in using AlertDialog Builder But the TextViews are not added to the Layout. I don't know why. Here is my whole code. What is wrong in my code?

public class HandleTableClick extends AppCompatActivity {
public int personsnumber;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.handle_table_click);
    final LinearLayout myLayout = (LinearLayout) findViewById(R.id.myLayout);
    final LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams( LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);

    AlertDialog.Builder alert = new AlertDialog.Builder(this);
    alert.setTitle("Type number of persons");
    final EditText input = new EditText(this);
    input.setInputType(InputType.TYPE_CLASS_NUMBER);
    input.setRawInputType(Configuration.KEYBOARD_12KEY);
    String persons = input.getText().toString();
    try {
        personsnumber = Integer.parseInt(persons);
    }
    catch (NumberFormatException nfe){

    }
    alert.setView(input);
    alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            TextView[] pairs=new TextView[personsnumber];
            for(int l=0; l<personsnumber; l++)
            {
                pairs[l] = new TextView(HandleTableClick.this);
                pairs[l].setTextSize(15);
                pairs[l].setLayoutParams(lp);
                pairs[l].setId(l);
                pairs[l].setText((l + 1) + ": something");
                myLayout.addView(pairs[l]);
            }
        }
    });

    alert.show();


}
}

Answer 1

I already tested it! and function perfect! :) And I added the setWeightSum to distribute the textView

public class MainActivity extends AppCompatActivity {

        TextView textView;
        Integer personsnumber;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            personsnumber=0;
            final LinearLayout myLayout = (LinearLayout) findViewById(R.id.myLayout);
            final LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams( LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT,1);

            AlertDialog.Builder alert = new AlertDialog.Builder(this);
            alert.setTitle("Type number of persons");
            final EditText input = new EditText(this);
            input.setInputType(InputType.TYPE_CLASS_NUMBER);
            input.setRawInputType(Configuration.KEYBOARD_12KEY);
            alert.setView(input);
            alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int whichButton) {
                    String persons = input.getText().toString();
                    try {
                        personsnumber = Integer.parseInt(persons);
                    }
                    catch (NumberFormatException nfe){
                    }
                    myLayout.setWeightSum(personsnumber);
                    for(int l=0; l<personsnumber; l++)
                    {
                        textView= new TextView(MainActivity.this);
                        textView.setTextSize(15);
                        textView.setId(l);
                        textView.setText((l + 1) + ": something");
                        textView.setLayoutParams(lp);
                        myLayout.addView(textView);

                    }
                    dialog.dismiss();
                }
            });
            alert.show();
        }


        }