带有onClickListeners的xml中的Android按钮，必须再次单击该按钮才能单击

Question

Have tried various solutions including those in here:

Have to click a button twice for it to work in Android Studio and here:

I have to click the button twice for it to work

And have tried " android:focusableInTouchMode="false" " on the buttons in the xml file which did not work either.

My current code is as follows:

SplashActivity.java

//THIS BIT IS IN THE ONCREATE METHOD
    Button enterButton = (Button) findViewById(R.id.enter_button);
    enterButton.setOnClickListener(OnClick);

    Button bookButton = (Button) findViewById(R.id.book_button);
    bookButton.setOnClickListener(OnClick);

}

//THIS BIT IS OUTSIDE OF THE ONCREATE METHOD
private OnClickListener OnClick = new OnClickListener() {

    public void onClick(View v) {
        Intent intent = new Intent(SplashActivity.this, MainActivity.class);
        switch (v.getId()) {
            case R.id.enter_button:

                handler.removeCallbacksAndMessages(null);
                startActivity(intent);

                break;
            case R.id.book_button:

                handler.removeCallbacksAndMessages(null);
                intent.putExtra("source", "onClick");
                startActivity(intent);

                break;
            default:
                break;
        }
    }
};
}

activity_splash.xml

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
             >


            <Button
                android:id="@+id/enter_button"
                android:theme="@style/AppTheme.DevButton"
                android:layout_width="100dp"
                android:layout_height="50dp"
                android:text="Enter"
                android:stateListAnimator="@null"
                />


            <Button
                android:id="@+id/book_button"
                android:theme="@style/AppTheme.DevButton"
                android:layout_width="100dp"
                android:layout_height="50dp"
                android:text="Book"
                android:stateListAnimator="@null"
                />

    </LinearLayout>

Really can't work out how to work around this!

UPDATE to - activity_splash.xml

So I've narrowed this down to the Java file, it doesn't seem to be the xml code causing the issue as I've trimmed down the xml file to the following and the symptoms are the same:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
     >

            <Button
                android:id="@+id/enter_button"
                android:layout_width="100dp"
                android:layout_height="50dp"

                />


            <Button
                android:id="@+id/book_button"
                android:layout_width="100dp"
                android:layout_height="50dp"
                />

</LinearLayout>

Answer 1

I would normally extend SplashActivity to include View.OnClickListener and implement

Button button = (Button)findViewById(R.id.button);
button.setOnClickListener(this);

@Override 
public void onClick(View view_) {
    ...
}

Not sure if this would make a difference or not?

Answer 2

我认为重点是父视图，因此将android:descendantFocusability=属性添加到父视图

Answer 3

So after all of the testing I've managed to find out what the problem was.

It was this line of code here which helps with display the image as full screen:

getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);

The SYSTEM_UI_FLAG_HIDE_NAVIGATION flag does not register touch events so you need to change it to SYSTEM_UI_FLAG_IMMERSIVE so it reads as follows:

getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_IMMERSIVE);

Note however this flag was only released after Android 4.4 API Level 19 so won't work in Android versions before this.

Thanks guys for looking into this as well for me, most appreciated.