package com.example.chongzhilianxi;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
//点按钮开启第二个窗口
public void click(View v){
Intent intent=new Intent(this,SecondActiviy.class);
startActivityForResult(intent, 1);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
TextView tv1=(TextView)findViewById(R.id.tv1);
String z=intent.getStringExtra("您充值了");
String s=intent.getStringExtra("充值失败");
if(requestCode==1){
switch(resultCode){
case 2:
tv1.setText("您充值了"+z);
//Toast.makeText(this,intent.getStringExtra(z), 0).show();
break;
case 3:
tv1.setText("充值失败");
//Toast.makeText(this,intent.getStringExtra(s), 0).show();
//Toast.makeText(this,"充值失败", 0).show();
break;
}
}
}
}
package com.example.chongzhilianxi;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.EditText;
import android.widget.Toast;
public class SecondActiviy extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second);
}
public void click(View v) {
EditText x=(EditText)findViewById(R.id.et1);
String txt1=x.getText().toString();
switch (v.getId()) {
//如果点的按钮是button2
case R.id.button2:
Intent intent=new Intent();
intent.putExtra("您充值了", txt1);
setResult(2, intent);//结果码是2,结果码标记一下是按哪个按钮回去的
finish();//关闭当前窗口
break;
case R.id.button3:
intent=new Intent();
intent.putExtra("充值失败", 0);
setResult(3, intent);//结果码为3
finish();//finish点击后当前窗口立即关闭,回到上个窗口的onActivityResult方法
break;
}
}
}
<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" >
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/et2"
android:layout_centerHorizontal="true"
android:layout_marginTop="122dp"
android:text="充值"
android:onClick="click" />
<EditText
android:id="@+id/et2"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_marginTop="55dp"
android:background="#ffffff"
android:ems="10"
android:paddingLeft="20dp"
android:hint="手机号码:" >
<requestFocus />
</EditText>
<TextView
android:id="@+id/tv1"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_alignLeft="@+id/et2"
android:layout_alignRight="@+id/et2"
android:layout_below="@+id/button1"
android:layout_marginLeft="33dp"
android:layout_marginTop="19dp"
android:gravity="center"
android:textSize="20sp"
android:textStyle="italic" />
</RelativeLayout>
<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=".SecondActiviy" >
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="66dp"
android:layout_toLeftOf="@+id/button3"
android:onClick="click"
android:text="充值" />
<Button
android:id="@+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/button2"
android:layout_alignBottom="@+id/button2"
android:layout_alignParentRight="true"
android:layout_marginRight="92dp"
android:onClick="click"
android:text="取消充值" />
<EditText
android:id="@+id/et1"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="110dp"
android:background="#ffffff"
android:ems="10"
android:hint="充值金额:"
android:paddingLeft="20dp" >
<requestFocus />
</EditText>
<TextView
android:id="@+id/tv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/button2"
android:layout_alignParentTop="true"
android:layout_marginTop="61dp"
android:gravity="center"
android:text="您要为:XXXXX充值"
android:textSize="20sp"
android:textStyle="italic" />
</RelativeLayout>
![](https://img2018.cnblogs.com/blog/1701021/201910/1701021-20191022214808782-156053079.png)
![](https://img2018.cnblogs.com/blog/1701021/201910/1701021-20191022214820979-1881789653.png)
![](https://img2018.cnblogs.com/blog/1701021/201910/1701021-20191022214829970-1835658450.png)