액티비티(Activity) - 액티비티간의 통신

Activity_main.xml

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:id="@+id/LinearLayout1"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    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=".MainActivity1" >

 

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="horizontal" >

 

        <EditText

            android:id="@+id/et"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:inputType="text" />

 

        <Button

            android:id="@+id/activity_btn1"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:layout_weight="3"

            android:text="이동"/>

    </LinearLayout>

 

</LinearLayout>

 

 

MainActivity.java

 

package com.example.activityex03;

 

import android.app.Activity;

import android.content.Context;

import android.content.Intent;

import android.os.Bundle;

import android.view.Menu;

import android.view.View;

import android.view.inputmethod.InputMethodManager;

import android.widget.EditText;

import android.widget.TextView;

 

public class MainActivity1 extends Activity {

     InputMethodManager imm;

 

     @Override

     protected void onCreate(Bundle savedInstanceState) {

           super.onCreate(savedInstanceState);

           setContentView(R.layout.activity_main_activity1);

 

           imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);

          

           findViewById(R.id.activity_btn1).setOnClickListener(

                     new View.OnClickListener() {

 

                           @Override

                           public void onClick(View v) {

                                // TODO Auto-generated method stub

                                EditText et = (EditText)findViewById(R.id.et);

                                String msg = et.getText().toString();

                               

                                imm.hideSoftInputFromWindow(et.getWindowToken(), 0);

                               

                                Intent intent = new Intent(MainActivity1.this, MainActivity2.class);

                                intent.putExtra("msg", msg);

                               

                                //startActivity(intent);

                                startActivityForResult(intent, 0);

                           }

                     });

     }

    

    

 

     @Override

     protected void onActivityResult(int requestCode, int resultCode, Intent data) {

           // TODO Auto-generated method stub

           //super.onActivityResult(requestCode, resultCode, data);

          

           if(resultCode == RESULT_OK){

                String result = "결과 : " + data.getStringExtra("result");

               

                TextView tv2 = (TextView)findViewById(R.id.tv2);

                tv2.setText(result);

           }

     }

 

 

 

     @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_activity1, menu);

           return true;

     }

 

}

 

 

Activity_main.xml

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:id="@+id/LinearLayout1"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    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=".MainActivity2" >

 

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="horizontal" >

 

        <TextView

            android:id="@+id/tv"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:layout_weight="1" />

 

        <Button

            android:id="@+id/activity_btn2"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:layout_weight="3"

            android:text="닫기" />

    </LinearLayout>

 

</LinearLayout>

 

 

MainActivity.java

 

package com.example.activityex03;

 

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.Menu;

import android.view.View;

import android.widget.TextView;

 

public class MainActivity2 extends Activity {

 

     @Override

     protected void onCreate(Bundle savedInstanceState) {

           super.onCreate(savedInstanceState);

           setContentView(R.layout.activity_main_activity2);

          

           Intent intent = getIntent();

           String msg = intent.getStringExtra("msg");

          

           TextView tv = (TextView)findViewById(R.id.tv);

           tv.setText(msg);

          

           findViewById(R.id.activity_btn2).setOnClickListener(new View.OnClickListener() {

               

                @Override

                public void onClick(View v) {

                     // TODO Auto-generated method stub

                     Intent intent = new Intent();

                     intent.putExtra("result", "1234");

                     setResult(RESULT_OK,intent);

                     finish();

                }

           });

     }

 

     @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_activity2, menu);

           return true;

     }

 

}