Java AttributeSet.getPositionDescription方法代码示例

import android.util.AttributeSet; //导入方法依赖的package包/类
private void createLayoutManager(Context context, String className, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
    if (className != null) {
        className = className.trim();
        if (className.length() != 0) {
            className = getFullClassName(context, className);
            try {
                ClassLoader classLoader;
                Constructor<? extends LayoutManager> constructor;
                if (isInEditMode()) {
                    classLoader = getClass().getClassLoader();
                } else {
                    classLoader = context.getClassLoader();
                }
                Class<? extends LayoutManager> layoutManagerClass = classLoader.loadClass(className).asSubclass(LayoutManager.class);
                Object[] constructorArgs = null;
                try {
                    constructor = layoutManagerClass.getConstructor(LAYOUT_MANAGER_CONSTRUCTOR_SIGNATURE);
                    constructorArgs = new Object[]{context, attrs, Integer.valueOf(defStyleAttr), Integer.valueOf(defStyleRes)};
                } catch (NoSuchMethodException e) {
                    constructor = layoutManagerClass.getConstructor(new Class[0]);
                }
                constructor.setAccessible(true);
                setLayoutManager((LayoutManager) constructor.newInstance(constructorArgs));
            } catch (NoSuchMethodException e1) {
                e1.initCause(e);
                throw new IllegalStateException(attrs.getPositionDescription() + ": Error creating LayoutManager " + className, e1);
            } catch (ClassNotFoundException e2) {
                throw new IllegalStateException(attrs.getPositionDescription() + ": Unable to find LayoutManager " + className, e2);
            } catch (InvocationTargetException e3) {
                throw new IllegalStateException(attrs.getPositionDescription() + ": Could not instantiate the LayoutManager: " + className, e3);
            } catch (InstantiationException e4) {
                throw new IllegalStateException(attrs.getPositionDescription() + ": Could not instantiate the LayoutManager: " + className, e4);
            } catch (IllegalAccessException e5) {
                throw new IllegalStateException(attrs.getPositionDescription() + ": Cannot access non-public constructor " + className, e5);
            } catch (ClassCastException e6) {
                throw new IllegalStateException(attrs.getPositionDescription() + ": Class is not a LayoutManager " + className, e6);
            }
        }
    }
}
 

import android.util.AttributeSet; //导入方法依赖的package包/类
public View onCreateView(View parent, String name, Context context, AttributeSet attrs) {
    if (!"fragment".equals(name)) {
        return null;
    }
    String fname = attrs.getAttributeValue(null, "class");
    TypedArray a = context.obtainStyledAttributes(attrs, FragmentTag.Fragment);
    if (fname == null) {
        fname = a.getString(0);
    }
    int id = a.getResourceId(1, -1);
    String tag = a.getString(2);
    a.recycle();
    if (!Fragment.isSupportFragmentClass(this.mHost.getContext(), fname)) {
        return null;
    }
    int containerId;
    if (parent != null) {
        containerId = parent.getId();
    } else {
        containerId = 0;
    }
    if (containerId == -1 && id == -1 && tag == null) {
        throw new IllegalArgumentException(attrs.getPositionDescription() + ": Must specify unique android:id, android:tag, or have a parent with an id for " + fname);
    }
    Fragment fragment;
    if (id != -1) {
        fragment = findFragmentById(id);
    } else {
        fragment = null;
    }
    if (fragment == null && tag != null) {
        fragment = findFragmentByTag(tag);
    }
    if (fragment == null && containerId != -1) {
        fragment = findFragmentById(containerId);
    }
    if (DEBUG) {
        Log.v(TAG, "onCreateView: id=0x" + Integer.toHexString(id) + " fname=" + fname + " existing=" + fragment);
    }
    if (fragment == null) {
        int i;
        fragment = Fragment.instantiate(context, fname);
        fragment.mFromLayout = true;
        if (id != 0) {
            i = id;
        } else {
            i = containerId;
        }
        fragment.mFragmentId = i;
        fragment.mContainerId = containerId;
        fragment.mTag = tag;
        fragment.mInLayout = true;
        fragment.mFragmentManager = this;
        fragment.mHost = this.mHost;
        fragment.onInflate(this.mHost.getContext(), attrs, fragment.mSavedFragmentState);
        addFragment(fragment, true);
    } else if (fragment.mInLayout) {
        throw new IllegalArgumentException(attrs.getPositionDescription() + ": Duplicate id 0x" + Integer.toHexString(id) + ", tag " + tag + ", or parent id 0x" + Integer.toHexString(containerId) + " with another fragment for " + fname);
    } else {
        fragment.mInLayout = true;
        fragment.mHost = this.mHost;
        if (!fragment.mRetaining) {
            fragment.onInflate(this.mHost.getContext(), attrs, fragment.mSavedFragmentState);
        }
    }
    if (this.mCurState >= 1 || !fragment.mFromLayout) {
        moveToState(fragment);
    } else {
        moveToState(fragment, 1, 0, 0, false);
    }
    if (fragment.mView == null) {
        throw new IllegalStateException("Fragment " + fname + " did not create a view.");
    }
    if (id != 0) {
        fragment.mView.setId(id);
    }
    if (fragment.mView.getTag() == null) {
        fragment.mView.setTag(tag);
    }
    return fragment.mView;
}