Android优化——UI优化（三）使用ViewStub延迟加载

使用ViewStub延迟加载

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1.ViewStub延迟加载

• xml

<ViewStub

        android:id="@+id/stub"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:inflatedId="@+id/subTree"

        android:layout="@layout/activity_viewstub_item"/>

• java

//获取到viewstub

final ViewStub stub = (ViewStub) findViewById(R.id.stub);

//测试用inflate()填充布局

Handler handler = new Handler() {

    @Override

    public void handleMessage(Message msg) {

        View view = stub.inflate();

    }

};

handler.sendEmptyMessageDelayed(1, 7000);

• 效果