private QueryItem createItem() {
QueryItem item = new QueryItem(getActivity());
MarginLayoutParams params =
new MarginLayoutParams(Constant.WRAP_CONTENT, Constant.WRAP_CONTENT);
params.topMargin = 20;
item.setLayoutParams(params);
return item;
}
public void restoreMarginLayoutParams(MarginLayoutParams params) {
this.restoreLayoutParams(params);
params.leftMargin = this.mPreservedParams.leftMargin;
params.topMargin = this.mPreservedParams.topMargin;
params.rightMargin = this.mPreservedParams.rightMargin;
params.bottomMargin = this.mPreservedParams.bottomMargin;
MarginLayoutParamsCompat.setMarginStart(
params, MarginLayoutParamsCompat.getMarginStart(this.mPreservedParams));
MarginLayoutParamsCompat.setMarginEnd(
params, MarginLayoutParamsCompat.getMarginEnd(this.mPreservedParams));
}
/**
* 设置View的顶部外边距(像素值)
*
* @param view
* @return
*/
public static boolean setMarginTop(View view, int marginTop) {
MarginLayoutParams marginParams = null;
try {
marginParams = (MarginLayoutParams) view.getLayoutParams();
} catch (ClassCastException e) {
return false;
}
if (marginParams == null) return false;
marginParams.topMargin = marginTop;
view.setLayoutParams(marginParams);
return true;
}
public void show(int touchX, int touchY) {
this.mL = touchX - this.mRegistrationX;
this.mT = touchY - this.mRegistrationY;
this.mR = (touchX - this.mRegistrationX) + this.mWidth;
this.mB = (touchY - this.mRegistrationY) + this.mHeight;
this.mLayout.addView(this);
MarginLayoutParams mp = (MarginLayoutParams) getLayoutParams();
mp.leftMargin = this.mL;
mp.topMargin = this.mT;
mp.rightMargin = this.mR;
mp.bottomMargin = this.mB;
setLayoutParams(mp);
}
/** Initialize necessary items such as database(helper), lists etc. */
@Override
public View onCreateView(
LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.home_layout, container, false);
// Retrieve databasehelper
recipesHelper = ((MainActivity) this.getActivity()).getDatabaseHelper();
// Initialize textview with introduction
TextView tv = (TextView) v.findViewById(R.id.text);
tv.setText(
"Welcome to the Hotmeals App!"
+ '\n'
+ "You can search for recipes by pressing the search tab,"
+ '\n'
+ "or view recipes that you've marked as a favorite by pressing the favorites tab!"
+ '\n'
+ "Or if you like, browse the recipes you've recently viewed down below.");
// Set top margins so that no overlap occurs
MarginLayoutParams margins = (MarginLayoutParams) tv.getLayoutParams();
margins.topMargin = ((MainActivity) this.getActivity()).getTabBarHeight();
tv.setLayoutParams(margins);
recipesReadableDatabase = recipesHelper.getReadableDatabase();
// Init database list
Cursor cursor = getRecentRecipes();
recentRecipes = getRecipesFromCursor(cursor);
cursor.close();
// Done with database
recipesReadableDatabase.close();
// Populate list
final ListView recentsList = (ListView) v.findViewById(R.id.recentsList);
RecipeListViewAdapter adapter =
new RecipeListViewAdapter(getActivity(), recipeArrayListToArray(recentRecipes));
recentsList.setAdapter(adapter);
// When recipe in list clicked, go to recipe
recentsList.setOnItemClickListener(
new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Recipe recipe = (Recipe) recentsList.getItemAtPosition(position);
goToRecipe(recipe);
}
});
return v;
}
/**
* 设置View的外边距(像素值)
*
* @param view
* @param left
* @param top
* @param right
* @param bottom
* @return
*/
public static boolean setMargin(View view, int left, int top, int right, int bottom) {
MarginLayoutParams marginParams = null;
try {
marginParams = (MarginLayoutParams) view.getLayoutParams();
} catch (ClassCastException e) {
return false;
}
if (marginParams == null) return false;
marginParams.leftMargin = left;
marginParams.topMargin = top;
marginParams.rightMargin = right;
marginParams.bottomMargin = bottom;
view.setLayoutParams(marginParams);
return true;
}
private static void resetViewLayoutParams(View view, float scale) {
if (view instanceof TextView) {
resetTextSize((TextView) view, scale);
}
int pLeft = convertFloatToInt(view.getPaddingLeft() * scale);
int pTop = convertFloatToInt(view.getPaddingTop() * scale);
int pRight = convertFloatToInt(view.getPaddingRight() * scale);
int pBottom = convertFloatToInt(view.getPaddingBottom() * scale);
view.setPadding(pLeft, pTop, pRight, pBottom);
LayoutParams params = view.getLayoutParams();
if ("test_relayout".equals(view.getTag())) {
Log.i("relayout", "test_relayout/" + params);
}
if (params == null) {
return;
}
if (params.width > 0) {
params.width = convertFloatToInt(params.width * scale);
}
if (params.height > 0) {
params.height = convertFloatToInt(params.height * scale);
}
if (params instanceof MarginLayoutParams) {
MarginLayoutParams mParams = (MarginLayoutParams) params;
if (mParams.leftMargin > 0) {
mParams.leftMargin = convertFloatToInt(mParams.leftMargin * scale);
}
if (mParams.rightMargin > 0) {
mParams.rightMargin = convertFloatToInt(mParams.rightMargin * scale);
}
if (mParams.topMargin > 0) {
mParams.topMargin = convertFloatToInt(mParams.topMargin * scale);
}
if (mParams.bottomMargin > 0) {
mParams.bottomMargin = convertFloatToInt(mParams.bottomMargin * scale);
}
}
}
public void fillMarginLayoutParams(MarginLayoutParams params, int widthHint, int heightHint) {
this.fillLayoutParams(params, widthHint, heightHint);
this.mPreservedParams.leftMargin = params.leftMargin;
this.mPreservedParams.topMargin = params.topMargin;
this.mPreservedParams.rightMargin = params.rightMargin;
this.mPreservedParams.bottomMargin = params.bottomMargin;
MarginLayoutParamsCompat.setMarginStart(
this.mPreservedParams, MarginLayoutParamsCompat.getMarginStart(params));
MarginLayoutParamsCompat.setMarginEnd(
this.mPreservedParams, MarginLayoutParamsCompat.getMarginEnd(params));
if (this.leftMarginPercent >= 0.0F) {
params.leftMargin = (int) ((float) widthHint * this.leftMarginPercent);
}
if (this.topMarginPercent >= 0.0F) {
params.topMargin = (int) ((float) heightHint * this.topMarginPercent);
}
if (this.rightMarginPercent >= 0.0F) {
params.rightMargin = (int) ((float) widthHint * this.rightMarginPercent);
}
if (this.bottomMarginPercent >= 0.0F) {
params.bottomMargin = (int) ((float) heightHint * this.bottomMarginPercent);
}
if (this.startMarginPercent >= 0.0F) {
MarginLayoutParamsCompat.setMarginStart(
params, (int) ((float) widthHint * this.startMarginPercent));
}
if (this.endMarginPercent >= 0.0F) {
MarginLayoutParamsCompat.setMarginEnd(
params, (int) ((float) widthHint * this.endMarginPercent));
}
if (Log.isLoggable("PercentLayout", 3)) {
Log.d(
"PercentLayout",
"after fillMarginLayoutParams: (" + params.width + ", " + params.height + ")");
}
}
public void setContentY(final int contentY) {
final MarginLayoutParams layoutParams = (MarginLayoutParams) getLayoutParams();
layoutParams.topMargin = contentY;
setLayoutParams(layoutParams);
}