<LinearLayout?xmlns:android="http://schemas.android.com/apk/res/android" ????xmlns:tools="http://schemas.android.com/tools" ????android:layout_width="match_parent" ????android:layout_height="match_parent" ????android:orientation="vertical" ????tools:context=".MainActivity"?> ????<LinearLayout ??????? ????????android:layout_width="match_parent" ????????android:layout_height="wrap_content" ????????android:orientation="horizontal" ?????????> ????????<EditText ????????????android:id="@+id/editext1" ????????????android:layout_width="wrap_content" ????????????android:layout_height="wrap_content" ????????????android:layout_weight="2" ????????????android:text="EditText"?/> ????????<Button ????????????android:id="@+id/button1" ????????????android:layout_width="wrap_content" ????????????android:layout_height="wrap_content" ????????????android:layout_weight="1" ????????????android:text="Button"?/> ????</LinearLayout> ????<TextView ???????? ????????android:id="@+id/textview1" ????????android:layout_width="match_parent" ????????android:layout_height="wrap_content" ????????android:text="TextView"?/> </LinearLayout>package com.example.sy1;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.View;import android.widget.Button;import android.widget.EditText;public class MainActivity extends Activity {? ? @Override? ? protected void onCreate(Bundle savedInstanceState) {? ? ? ? super.onCreate(savedInstanceState);? ? ? ? setContentView(R.layout.activity_main);? ? ? ? final EditText edittext=(EditText)findViewById(R.id.editext1);? ? ? ? Button button=(Button)findViewById(R.id.button1);? ? ? ? final EditText textview=(EditText)findViewById(R.id.textview1);? ? ? ? button.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubtextview.setText(""+edittext.getText().toString());}});? ? ? ??? ? }? ?? ??? ? @Override? ? public boolean onCreateOptionsMenu(Menu menu) {? ? ? ? // Inflate the menu; this adds items to the action bar if it is present.? ? ? ? getMenuInflater().inflate(R.menu.main, menu);? ? ? ? return true;? ? }? ??}