Textview text color not working programatically

Question

I'm trying to change the colour of my text views within a RelativeLayout, but for some reason it's not working.

import android.graphics.Color; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.widget.TextViewCompat; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.GridLayout.LayoutParams; import android.widget.RelativeLayout; import android.widget.TextView; import com.companyname.projectname.R; import static com.companyname.projectname.R.id.FL_relativeLayout; public class FragmentFL extends android.support.v4.app.Fragment { public FragmentFL() { } @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { return inflater.inflate(R.layout.fragment_fl, container, false); } @Override public void onActivityCreated(@Nullable Bundle savedInstanceState) { View v = getView(); assert v != null; RelativeLayout relativelayout = v.findViewById(FL_relativeLayout); RelativeLayout.LayoutParams rlp = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); TextView txt1 = new TextView(getActivity()); txt1.setText("Hello world"); TextViewCompat.setTextAppearance(txt1, android.R.style.TextAppearance_Large); txt1.setTextColor(Color.BLACK); TextView txt2 = new TextView(getActivity()); txt2.setText("Bonjour le monde"); TextViewCompat.setTextAppearance(txt2, android.R.style.TextAppearance_Medium); txt1.setTextColor(Color.BLACK); rlp.setMargins(0, 0, 0, 20); rlp.addRule(RelativeLayout.BELOW, txt1.getId()); txt1.setLayoutParams(rlp); txt2.setLayoutParams(rlp); relativelayout.addView(txt1); relativelayout.addView(txt2); // set IDs for text views txt1.setId(View.generateViewId()); txt2.setId(View.generateViewId()); super.onActivityCreated(savedInstanceState); } }

This style might be overriding the color:android.R.style.TextAppearance_Large — Bob
– Bob, Commented Aug 18, 2017 at 18:08
And looks like you are not setting LayoutParams for txt1. — Bob
– Bob, Commented Aug 18, 2017 at 18:09
I think so. Because without LayoutParams there is no width and height set for the View, right? — Bob
– Bob, Commented Aug 18, 2017 at 18:11
Check my answer, if margin didn't work you may show us your xml layout to help you — Alireza Sharifi
– Alireza Sharifi, Commented Aug 18, 2017 at 18:15

Alireza Sharifi · Accepted Answer · 2017-08-18 18:14:32Z

2

Set appearance befor set text color. The Appearance overrides the textcolor And Generate id befor set rule.

answered Aug 18, 2017 at 18:14

Alireza Sharifi

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Bhuvanesh BS · Accepted Answer · 2017-08-18 18:26:23Z

Alignment is not good because you have to set Id for the view before setting rule.

Code:

 RelativeLayout.LayoutParams rlp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT); TextView txt1 = new TextView(this); txt1.setText("Hello world"); txt1.setTextColor(Color.BLACK); TextViewCompat.setTextAppearance(txt1, android.R.style.TextAppearance_Large); TextView txt2 = new TextView(this); txt2.setText("Bonjour le monde"); txt2.setTextColor(Color.BLACK); TextViewCompat.setTextAppearance(txt2, android.R.style.TextAppearance_Medium); txt1.setId(View.generateViewId()); txt2.setId(View.generateViewId()); rlp.setMargins(0, 0, 0, 20); rlp.addRule(RelativeLayout.BELOW, txt1.getId()); txt2.setLayoutParams(rlp); relativelayout.addView(txt1); relativelayout.addView(txt2);

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