以编程方式更改TextInputLayout焦点和非焦点提示颜色

import android.graphics.Color;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import com.google.android.material.textfield.TextInputLayout;
import com.google.android.material.textfield.TextInputEditText;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextInputLayout textInputLayout = findViewById(R.id.textInputLayout);
        TextInputEditText textInputEditText = findViewById(R.id.textInputEditText);

        // 设置非焦点提示颜色
        textInputLayout.setHintTextColor(Color.GRAY);

        // 设置焦点提示颜色
        textInputLayout.setHintTextColor(Color.BLUE);

        // 监听焦点变化
        textInputEditText.setOnFocusChangeListener((view, hasFocus) -> {
            if (hasFocus) {
                textInputLayout.setHintTextColor(Color.BLUE);
            } else {
                textInputLayout.setHintTextColor(Color.GRAY);
            }
        });
    }
}