安卓學習筆記（二）、使用剪切板傳遞數據

1、

public class MainActivity extends Activity {
	private Button button;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button = (Button) this.findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
			
			@SuppressLint("NewApi") @Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
//			ClipboardManager clipboardManager = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
//			String name = "Jack";
//			clipboardManager.setText(name);
//			Intent intent = new Intent(MainActivity.this,OtherActivity.class);
//			startActivity(intent);
			MyData myData = new MyData("jack", 23);
			//將對象轉換成字符串
			ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
			String base64String = "";
			try {
				ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);
				objectOutputStream.writeObject(myData);
				base64String = Base64.encodeToString(byteArrayOutputStream.toByteArray(), Base64.DEFAULT);
				objectOutputStream.close();
			} catch (Exception e) {
				// TODO: handle exception
			}
				ClipboardManager clipboardManager = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
				clipboardManager.setText(base64String);
				Intent intent = new Intent(MainActivity.this,OtherActivity.class);
				startActivity(intent);
			}
		});
    }
}

2、

public class OtherActivity extends Activity {
	private TextView textView;
	@SuppressLint("NewApi") @Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		setContentView(R.layout.other);
		textView =(TextView) this.findViewById(R.id.msg);
		ClipboardManager clipboardManager = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
		String msgString = clipboardManager.getText().toString();
		byte[] base64_byte = Base64.decode(msgString, Base64.DEFAULT);
		ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(base64_byte);
		try {
			ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);
			
			MyData myData = (MyData) objectInputStream.readObject();
			textView.setText(myData.toString());
		} catch (Exception e) {
			// TODO: handle exception
		}
		 
	}

}

3、

public class MyData implements Serializable {
	private String name;
	private int age;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public MyData(String name, int age) {
		super();
		this.name = name;
		this.age = age;
	}
	@Override
	public String toString() {
		return "MyData [getName()=" + getName() + ", getAge()=" + getAge()
				+ "]";
	}
 
	
}