Question

我有三个xml文件用于布局，例如

activity_behind_left_simple.xml
activity_behind_right_simple.xml
activity_main.xml中

我将textViews实现为activity_behind_left_simple.xml 它显示菜单列表。它工作正常。

所以我也在activity_behind_right_simple.xml做了同样的事。

然而，现在应用程序一启动就会关闭:(

为什么？右边有什么问题？的 activity_behind_left_simple.xml

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    style="@style/leftBehindMenuScroll" >

    <LinearLayout style="@style/behindMenuScrollContent"
        android:paddingTop="25dp" >

        <TextView
            style="@style/behindMenuItemTitle"
            android:text="People" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content" >

            <jp.fureco.IconView 
                android:id="@+id/iconViewItem4"
                android:orientation="vertical"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="15dp"
                android:textSize="20dp"/>

            <TextView
                android:layout_marginLeft="10dp"
                style="@style/behindMenuItemLabel"
                android:text="Visitor" />

        </LinearLayout>

    </LinearLayout>

</ScrollView>

activity_behind_right_simple.xml

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    style="@style/rightBehindMenuScroll" >

    <LinearLayout style="@style/behindMenuScrollContent"
        android:paddingTop="25dp" >

        <TextView
            style="@style/behindMenuItemTitle"
            android:text="Messages" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content" >

            <jp.fureco.IconView 
                android:id="@+id/iconViewItem5"
                android:orientation="vertical"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="15dp"
                android:textSize="20dp"/>

            <TextView
                android:layout_marginLeft="10dp"
                style="@style/behindMenuItemLabel"
                android:text="Received" />

        </LinearLayout>

    </LinearLayout>

</ScrollView>

SimpleSideDrawer.java

    ....
   public View setLeftBehindContentView(int leftBehindLayout) {
        final View content = ((LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(leftBehindLayout, mLeftBehindBase);

        String[] icons = getResources().getStringArray(R.array.icons);
        IconView iv4 = (IconView) findViewById(R.id.iconViewItem4);
        iv4.setTypeface(Typeface.createFromAsset(getContext().getAssets(), "icons.ttf"));
        iv4.setText(icons[8]);

        IconView iv5 = (IconView) findViewById(R.id.iconViewItem5);
        iv5.setTypeface(Typeface.createFromAsset(getContext().getAssets(), "icons.ttf"));
        iv5.setText(icons[315]);


        mLeftPaddingRect = new Rect(content.getPaddingLeft(), content.getPaddingTop(), content.getPaddingRight(), content.getPaddingBottom());
        mLeftBehindView = content;
        return content;
    }        

    ....

然后，如果我删除此部分，应用程序将不再关闭。
我该如何解决？

IconView iv5 = (IconView) findViewById(R.id.iconViewItem5);
iv5.setTypeface(Typeface.createFromAsset(getContext().getAssets(), "icons.ttf"));
iv5.setText(icons[315]);

MainActivity.java

...
    @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);



    getSize();

    mActionBar = getActionBar();
    mActionBar.hide();


    mNav = new SimpleSideDrawer(this);
    mNav.setLeftBehindContentView(R.layout.activity_behind_left_simple);
    mNav.setRightBehindContentView(R.layout.activity_behind_right_simple);
....

SimpleSideDrawer.java 我发现了这个。这有关系吗？

public View setRightBehindContentView(int rightBehindLayout) {
    final View content = ((LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(rightBehindLayout, mRightBehindBase);
    mRightPaddingRect = new Rect(content.getPaddingLeft(), content.getPaddingTop(), content.getPaddingRight(), content.getPaddingBottom());
    mRightBehindView = content;
    return content;
}

第2部分

public View setLeftBehindContentView(int leftBehindLayout) {
    final View content = ((LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(leftBehindLayout, mLeftBehindBase);

    String[] icons = getResources().getStringArray(R.array.icons);

    IconView iv4 = (IconView) findViewById(R.id.iconViewItem4);
    iv4.setTypeface(Typeface.createFromAsset(getContext().getAssets(), "icons.ttf"));
    iv4.setText(icons[25]);

    IconView iv5 = (IconView) findViewById(R.id.iconViewItem5);
    iv5.setTypeface(Typeface.createFromAsset(getContext().getAssets(), "icons.ttf"));
    iv5.setText(icons[26]);

    IconView iv6 = (IconView) findViewById(R.id.iconViewItem6);
    iv6.setTypeface(Typeface.createFromAsset(getContext().getAssets(), "icons.ttf"));
    iv6.setText(icons[117]);        

    mLeftPaddingRect = new Rect(content.getPaddingLeft(), content.getPaddingTop(), content.getPaddingRight(), content.getPaddingBottom());
    mLeftBehindView = content;
    return content;
}

Answer 1

看起来你并没有在任何地方充气activity_behind_right_simple.xml。据我所知，当你试图修改iv5时，你应该得到一个NPE。

编辑：如果您将以下代码添加到主要版面并将ScrollViews括在FrameLayout中，则会在setContentView()期间让所有内容膨胀。

<include
        layout="@layout/leftScrollView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

<include
        layout="@layout/rightScrollView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

Answer 2

您需要提供对膨胀布局的引用。试试你的所有观点在setLeftBehindContentView方法中进行访问：

     e.g:  

     IconView iv5 = (IconView) content.findViewById(R.id.iconViewItem5);

注意：我假设对应于R.id.iconViewItems的视图位于膨胀的布局文件中。

即使没有错误警告，为什么应用程序会在启动后立即关闭？

2 个答案: