Applicationクラスを継承して、データの共有をする。

ApplicationClassTest/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="src" path="gen"/>
+	<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

ApplicationClassTest/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>ApplicationClassTest</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ApkBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

ApplicationClassTest/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+	package="com.kobashin.applicationclasstest" android:versionCode="1"
+	android:versionName="1.0">
+	<!-- application属性に「android:name」属性を追加 -->
+	<application android:name="com.kobashin.applicationclasstest.TestApplication"
+		android:icon="@drawable/icon" android:label="@string/app_name">
+
+		<activity android:name=".Main" android:label="@string/app_name">
+			<intent-filter>
+				<action android:name="android.intent.action.MAIN" />
+				<category android:name="android.intent.category.LAUNCHER" />
+			</intent-filter>
+		</activity>
+		<activity android:name=".Sub" android:label="@string/app_name">
+		</activity>
+
+	</application>
+	<uses-sdk android:minSdkVersion="8" />
+
+</manifest> 

ApplicationClassTest/default.properties

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+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+# 
+# This file must be checked in Version Control Systems.
+# 
+# To customize properties used by the Ant build system use,
+# "build.properties", and override values to adapt the script to your
+# project structure.
+
+# Project target.
+target=android-8

ApplicationClassTest/res/layout/main.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+	android:orientation="vertical" android:layout_width="fill_parent"
+	android:layout_height="fill_parent" android:id="@+id/Layout01">
+	<TextView android:layout_width="fill_parent"
+		android:layout_height="wrap_content" android:text="@string/hello" />
+
+	<Button android:text="Call Sub Activity" android:id="@+id/Button01"
+		android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
+</LinearLayout>

ApplicationClassTest/res/layout/sub.xml

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+<LinearLayout android:id="@+id/LinearLayout01" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android"><ImageView android:id="@+id/ImageView01" android:layout_width="wrap_content" android:layout_height="wrap_content"></ImageView>
+</LinearLayout>

ApplicationClassTest/res/values/strings.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="hello">Hello World, Main!</string>
+    <string name="app_name">ApplicationClassTest</string>
+</resources>

ApplicationClassTest/src/com/kobashin/applicationclasstest/Main.java

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+package com.kobashin.applicationclasstest;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.Bundle;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.Button;
+import android.widget.TextView;
+
+public class Main extends Activity implements OnClickListener {
+	private Bitmap bmp_main;
+	private TestApplication ta;
+	private Button bt;
+
+	/** Called when the activity is first created. */
+	@Override
+	public void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		setContentView(R.layout.main);
+
+		/* getApplication()で自己アプリケーションクラスのインスタンスを拾う */
+		ta = (TestApplication) this.getApplication();
+
+		bt = (Button) findViewById(R.id.Button01);
+		bt.setOnClickListener(this);
+
+	}
+
+	@Override
+	public void onClick(View v) {
+		if (v == bt) {
+			bmp_main = BitmapFactory.decodeResource(getResources(),
+					R.drawable.andy);
+
+			ta.setObj(bmp_main);
+
+			Intent i = new Intent();
+			i.setClassName("com.kobashin.applicationclasstest",
+					"com.kobashin.applicationclasstest.Sub");
+			startActivity(i);
+		}
+	}
+
+}

ApplicationClassTest/src/com/kobashin/applicationclasstest/Sub.java

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+package com.kobashin.applicationclasstest;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.Bundle;
+import android.util.Log;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+public class Sub extends Activity {
+
+    /** Called when the activity is first created. */
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+    	super.onCreate(savedInstanceState);
+        setContentView(R.layout.sub);
+
+        TextView tView = new TextView(this);
+
+        /* getApplication()で自己アプリケーションクラスのインスタンスを拾う */
+        TestApplication ta = (TestApplication)this.getApplication();
+
+        Bitmap bmp_sub = ta.getObj();
+
+        LinearLayout lLayout = (LinearLayout)findViewById(R.id.LinearLayout01);
+        ImageView iView = (ImageView)findViewById(R.id.ImageView01);
+
+        iView.setImageBitmap(bmp_sub);
+
+    }
+}

ApplicationClassTest/src/com/kobashin/applicationclasstest/TestApplication.java

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+package com.kobashin.applicationclasstest;
+
+import android.app.Application;
+import android.graphics.Bitmap;
+import android.util.Log;
+
+public class TestApplication extends Application {
+	private final String TAG = "DEBUG-APPLICATION";
+	private Bitmap obj;
+
+	@Override
+    public void onCreate() {
+	    /** Called when the Application-class is first created. */
+		Log.v(TAG,"--- onCreate() in ---");
+	}
+
+    @Override
+    public void onTerminate() {
+    	/** This Method Called when this Application finished. */
+		Log.v(TAG,"--- onTerminate() in ---");
+    }
+
+    public void setObj(Bitmap bmp){
+    	obj = bmp;
+    }
+
+    public Bitmap getObj(){
+    	return obj;
+    }
+}