Material Error & Helper Text
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package com.material.components.activity.form;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import com.google.android.material.textfield.TextInputEditText;
import com.google.android.material.textfield.TextInputLayout;
import com.material.components.R;
import com.material.components.utils.Tools;
public class FormMaterialErrorHelperText extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_form_material_error_helper_text);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setNavigationIcon(R.drawable.ic_chevron_left);
setSupportActionBar(toolbar);
getSupportActionBar().setTitle("Sign Up");
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
Tools.setSystemBarColor(this);
TextInputLayout input_layout_username = findViewById(R.id.input_layout_username);
input_layout_username.setError("Error: at least 8 characters");
TextInputEditText input_text_username = findViewById(R.id.input_text_username);
input_text_username.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
if(s.toString().trim().length() < 8){
input_layout_username.setErrorEnabled(true);
input_layout_username.setError("Error: at least 8 characters");
} else {
input_layout_username.setErrorEnabled(false);
input_layout_username.setError("");
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_setting, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == android.R.id.home) {
finish();
} else {
Toast.makeText(getApplicationContext(), item.getTitle(), Toast.LENGTH_SHORT).show();
}
return super.onOptionsItemSelected(item);
}
}