一个完整的可以模仿的文本框实例！可以直接粘贴代码

链接 https://www.oschina.net/question/234345_41048

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/textviewll"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<EditText
android:id="@+id/sample_edit_text0"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="简单的EditText输入框"/>
<Button
android:id="@+id/sample_button0"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:text="确定"/>
</LinearLayout>

java代码

public class SampleActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
setContentView(R.layout.sample);

final EditText editText0 = (EditText)findViewById(R.id.sample_edit_text0);

Button button0 = (Button)findViewById(R.id.sample_button0);

button0.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
String str = editText0.getText().toString();
Toast.makeText(SampleActivity.this,str, Toast.LENGTH_LONG).show();
}
});

super.onCreate(savedInstanceState);
}
}