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比喻很形象


Please note that the methods in Listing 1-10 are internal methods and are not part of the 
public API, so they may change with newer releases. However, the underlying protocol would remain 
the same.
In Listing 1-10, it is easier to first tell what forceLayout( ) is. It is like a touch command in build 
environments. Usually when a file hasn’t changed, the build dependencies will ignore it. So, you 
force that file to be compiled by “touch”ing, and thereby updating its time stamp. Just like touch, 
the forceLayout( ) will not invoke any build commands by itself (unless your build environment is too 

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*.iml

# generated files
bin/
gen/

# Ignore gradle files
.gradle
build/

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Unless specified otherwise, all of the below tinting applies to both Lollipop and pre-Lollipop using AppCompat v21. 
To use the support version of these attributes, remove the android namespace.  

For instance, "android:colorControlNormal" becomes "colorControlNormal".  

These attributes will be propagated to their corresponding attributes within the android namespace 
for devices running Lollipop.  Any exceptions to this will be noted by including the "android:" prefix.
 
All Clickable Views:
-----------

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public abstract class BaseFragment extends Fragment {

    static final String STATE = "saved_state";
    Bundle mSavedState;

    public BaseFragment() {}

    public abstract void refreshData();

    protected void showSoftKeyboard(View editText) {

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    public static Bitmap blendRenderScript(RenderScript rs, Bitmap originalBitmap) {

        // Creates a matching Renderscript allocation object and
        // copies the contents of the bitmap into the allocation
        Allocation input = Allocation.createFromBitmap(rs, originalBitmap,
                Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);

        // Generates an Allocation identical in structure to the first
        Allocation output = Allocation.createTyped(rs, input.getType());

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public abstract class CursorPagerAdapter extends PagerAdapter {

    public static final String TAG = CursorPagerAdapter.class.getSimpleName();

    protected WeakReference<Context> ctxRef;

    protected boolean mDataValid;
    protected boolean mAutoRequery;
    protected Cursor mCursor;
    protected int mRowIDColumn;

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public abstract class AbstractCursorRecyclerAdapter<VH extends RecyclerView.ViewHolder>
        extends RecyclerView.Adapter<VH> {

    protected Context mContext;

    protected Cursor mCursor;
    protected boolean mDataValid;
    protected int mRowIDColumn;

    protected ChangeObserver mChangeObserver;

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private void setupView() {
        mViewStateIndicator.setImageResource(mIsRevealed
                ? R.drawable.revealed
                : R.drawable.not_revealed);
        int hideTranslateY = -mToBeRevealedViewContainer.getHeight() / 4; // last 25% of animation
        if (mIsRevealed && mToBeRevealedViewContainer.getTranslationY() == 0) {
            // initial setup
            mToBeRevealedViewContainer.setAlpha(0);
            mToBeRevealedViewContainer.setTranslationY(hideTranslateY);
        }