empty-field-validation-in-android

Android empty field validation in android or required field validation
we can solve this issue using setError().
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@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button btn =(Button)findViewById(R.id.button1);
btn.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
EditText edittext =(EditText)findViewById(R.id.editText1);
if(edittext.getText().length()==0){
edittext.setError(“please enter the value”);
}
}
});
}