Android------打招呼

来源：互联网发布：阿里数据分析师年薪编辑：程序博客网时间：2024/05/04 02:20

<img src="http://img.blog.csdn.net/20160316124149721?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /><img src="http://img.blog.csdn.net/20160316124319632?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />

一：Activity——main:<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity"    android:background="@drawable/bg"     >    <TextView        android:id="@+id/tvNamePrompt"        android:layout_width="wrap_content"        android:layout_height="wrap_content"         android:layout_alignParentTop="true"        android:layout_centerHorizontal="true"        android:layout_marginTop="171dp"        android:text="@string/tv_namePrompt" />     <EditText        android:id="@+id/etName"        android:hint="@string/tv_namePrompt"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@id/tvNamePrompt"        android:layout_centerHorizontal="true"        android:layout_marginTop="20dp"        android:ems="10"        android:inputType="textPersonName" >                  <requestFocus />    </EditText>    <Button        android:id="@+id/btn_Click"        android:background="@null"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignRight="@+id/tvNamePrompt"        android:layout_below="@+id/etName"        android:layout_marginTop="26dp"        android:layout_marginLeft="10dp"        android:text="@string/btn_Click" /></RelativeLayout>二：MainActivity:package cn.edu.bztc.android;import org.apache.http.client.protocol.ClientContextConfigurer;import cn.edu.bztc.andriod.R;import android.app.Activity;import android.os.Bundle;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;public class MainActivity extends Activity {public static final String TAG="MainActivity";            private Button  btnClick;            private EditText etName;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);                btnClick = (Button) findViewById(R.id.btn_Click);        btnClick.setOnClickListener(new ClickHandler());         etName=(EditText) findViewById(R.id.etName);       }    class ClickHandler implements OnClickListener{@Overridepublic void onClick(View v) {// TODO Auto-generated method stubString name=etName.getText().toString();Log.d(TAG, "name="+name);Toast.makeText(MainActivity.this, "你好"+name, Toast.LENGTH_LONG).show();}            }三：Strings.xml:<resources>    <string name="app_name">Hello</string>    <string name="action_settings">Settings</string>    <string name="tv_namePrompt">请输入你的姓名!</string>     <string name="btn_Click">请点击它</string></resources>

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