【移動應(yīng)用開發(fā)技術(shù)】Android下Activity間通信序列化過程中深淺拷貝的示例分析

【移動應(yīng)用開發(fā)技術(shù)】Android下Activity間通信序列化過程中深淺拷貝的示例分析

前言這里的代碼很快就可以寫好，如下所示：/**

*

Created

by

DesGemini

on

12/09/2017.

*/

public

class

DialogActivity

extends

Activity

{

private

RelativeLayout

mContentView;

private

View

vSendBtn;

private

EditText

etDanmakuInput;

private

InputMethodManager

mInputMethodManager;

public

static

WeakReference<DanmakuWriteCallback>

danmakuWriteCallback

=

new

WeakReference<>();

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

mInputMethodManager

=

(InputMethodManager)this.getSystemService(Context.INPUT_METHOD_SERVICE);

mContentView

=

(RelativeLayout)

getLayoutInflater()

.inflate(R.layout.hiv_danmaku_input_dialog,

null);

vSendBtn

=

mContentView.findViewById(R.id.tv_danmaku_send_btn);

etDanmakuInput

=

(EditText)

mContentView.findViewById(R.id.et_danmaku_input);

vSendBtn.setOnClickListener(new

OnClickListener()

{

@Override

public

void

onClick(View

v)

{

//

這里需要處理

Activity

間回傳邏輯

}

});

setContentView(mContentView);

showSoftKeyboard();

}

private

boolean

showSoftKeyboard()

{

if

(this.etDanmakuInput

==

null)

{

return

false;

}

else

{

etDanmakuInput.postDelayed(new

Runnable()

{

public

void

run()

{

etDanmakuInput.requestFocus();

mInputMethodManager.showSoftInput(etDanmakuInput,

0);

}

},

100L);

return

true;

}

}

@Override

protected

void

onPause()

{

super.onDestroy();

danmakuWriteCallback.getAndSet(null);

}

@Override

public

void

finish()

{

super.finish();

}

}public

class

DanmakuDialogDTO

implements

Serializable

{

public

WeakReference<DWDanmakuWriteController.DanmakuWriteCallback>

callback;

public

Map<String,

String>

utExtraParams;

}那么現(xiàn)在問題來了，怎么把這個Activity獲取到的String帶回去？/upload/information/20200623/125/126201.pngjava.lang.NullPointerException:

Expected

to

unbox

a

'int'

primitive

type

but

was

returned

null$Proxy1.startActivity(Unknown

Source)

android.app.Instrumentation.execStartActivity(Instrumentation.java:15