下面列出了怎么用android.view.ViewGroup.MarginLayoutParams的API类实例代码及写法，或者点击链接到github查看源代码。
/**
* 恢复初始状态
*/
private void recovery() {
progress.setVisibility(View.GONE);
mBtnLogin.setVisibility(View.VISIBLE);
mInputLayout.setVisibility(View.VISIBLE);
mName.setVisibility(View.VISIBLE);
mPsw.setVisibility(View.VISIBLE);
ViewGroup.MarginLayoutParams params = (MarginLayoutParams) mInputLayout.getLayoutParams();
params.leftMargin = 0;
params.rightMargin = 0;
mInputLayout.setLayoutParams(params);
ObjectAnimator animator2 = ObjectAnimator.ofFloat(mInputLayout, "scaleX", 0.5f,1f );
animator2.setDuration(500);
animator2.setInterpolator(new AccelerateDecelerateInterpolator());
animator2.start();
}
void highlightView(View view) {
ViewGroup.LayoutParams layoutParams = view.getLayoutParams();
if (layoutParams instanceof MarginLayoutParams) {
MarginLayoutParams marginLayoutParams = (MarginLayoutParams) layoutParams;
mMargins.left = marginLayoutParams.leftMargin;
mMargins.top = marginLayoutParams.topMargin;
mMargins.right = marginLayoutParams.rightMargin;
mMargins.bottom = marginLayoutParams.bottomMargin;
} else {
mMargins.left = 0;
mMargins.top = 0;
mMargins.right = 0;
mMargins.bottom = 0;
}
mPaddings.left = view.getPaddingLeft();
mPaddings.top = view.getPaddingTop();
mPaddings.right = view.getPaddingRight();
mPaddings.bottom = view.getPaddingBottom();
}
private void findView() {
this.mOperationBarView = this.root.findViewById(2131362660);
this.mFooterLayout = UIs.inflate(this.mActivity, R.layout.fragment_my_download_worldcup_bottom, null);
this.mFootCloseBtn = (Button) this.mFooterLayout.findViewById(R.id.btn_close_worldcup);
this.mNullScrollView = (ScrollView) this.root.findViewById(R.id.scrollview_tip);
this.mNullTip = (LinearLayout) this.root.findViewById(R.id.linearlayout_tip_download);
this.mTextOpenTip = (TextView) this.root.findViewById(R.id.textv_open_worldcup_tip);
((MarginLayoutParams) this.mTextOpenTip.getLayoutParams()).topMargin = UIs.zoomWidth(LiveType.PLAY_LIVE_OTHER);
this.mTextOpenSubTip = (TextView) this.root.findViewById(R.id.textv_open_worldcup_tip_line2);
((MarginLayoutParams) this.mTextOpenSubTip.getLayoutParams()).topMargin = UIs.zoomWidth(9);
this.mListView = (ListView) this.root.findViewById(2131361938);
this.mStartAllBtn = (Button) this.mOperationBarView.findViewById(2131362659);
this.mPauseAllBtn = (Button) this.mOperationBarView.findViewById(2131362658);
this.mOpenWorldCupBtn = (Button) this.root.findViewById(R.id.btn_open_close);
this.mStartAllBtn.setOnClickListener(this.onClick);
this.mPauseAllBtn.setOnClickListener(this.onClick);
this.mOpenWorldCupBtn.setOnClickListener(this.onClick);
this.mFootCloseBtn.setOnClickListener(this.onClick);
this.mDialog = new CustomLoadingDialog(this.mActivity);
this.mDialog.setCanceledOnTouchOutside(false);
this.rootWatchAlertLayout = (RelativeLayout) this.root.findViewById(R.id.road_watch_ball_alert_layout);
((TextView) this.rootWatchAlertLayout.findViewById(R.id.road_watch_ball_alert)).setText(LetvTools.getTextFromServer(DialogMsgConstantId.CONSTANT_70013, getActivity().getResources().getString(2131100080)));
this.rootWatchAlertLayout.setOnClickListener(this.onClick);
setText();
}
/**
* Create a new instance of the bookmarks page.
* @param activity The activity to get context and manage fragments.
* @param tab The tab to load urls.
*/
public BookmarkPage(Activity activity, Tab tab) {
mActivity = activity;
mTab = tab;
mTitle = activity.getString(R.string.bookmarks);
mBackgroundColor = ApiCompatibilityUtils.getColor(activity.getResources(),
R.color.default_primary_color);
mThemeColor = ApiCompatibilityUtils.getColor(
activity.getResources(), R.color.default_primary_color);
mManager = new BookmarkManager(mActivity, false);
Resources res = mActivity.getResources();
MarginLayoutParams layoutParams = new MarginLayoutParams(
MarginLayoutParams.MATCH_PARENT, MarginLayoutParams.MATCH_PARENT);
layoutParams.setMargins(0,
res.getDimensionPixelSize(R.dimen.tab_strip_height)
+ res.getDimensionPixelSize(R.dimen.toolbar_height_no_shadow),
0, 0);
mManager.getView().setLayoutParams(layoutParams);
mManager.setUrlChangeListener(this);
}
@Override public @Nullable View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ViewPager view = new ViewPager(getActivity()); // container.getContext() results in white on white text
view.setId(android.R.id.list);
view.setLayoutParams(new MarginLayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
PagerTitleStrip title = new PagerTabStrip(view.getContext());
ViewPager.LayoutParams params = new ViewPager.LayoutParams();
params.width = LayoutParams.MATCH_PARENT;
params.height = LayoutParams.WRAP_CONTENT;
params.gravity = Gravity.TOP;
title.setLayoutParams(params);
view.addView(title);
return view;
}
void highlightView(View view) {
ViewGroup.LayoutParams layoutParams = view.getLayoutParams();
if (layoutParams instanceof MarginLayoutParams) {
MarginLayoutParams marginLayoutParams = (MarginLayoutParams) layoutParams;
mMargins.left = marginLayoutParams.leftMargin;
mMargins.top = marginLayoutParams.topMargin;
mMargins.right = marginLayoutParams.rightMargin;
mMargins.bottom = marginLayoutParams.bottomMargin;
} else {
mMargins.left = 0;
mMargins.top = 0;
mMargins.right = 0;
mMargins.bottom = 0;
}
mPaddings.left = view.getPaddingLeft();
mPaddings.top = view.getPaddingTop();
mPaddings.right = view.getPaddingRight();
mPaddings.bottom = view.getPaddingBottom();
}
void adjustViewPosition() {
mParent.getWindowVisibleDisplayFrame(mCurrentVisibleRect);
// Only update if the visible frame has changed, otherwise there will be a layout loop.
if (!mCurrentVisibleRect.equals(mPreviousVisibleRect)) {
mPreviousVisibleRect.set(mCurrentVisibleRect);
int keyboardHeight = mParent.getHeight() - mCurrentVisibleRect.bottom
+ mCurrentVisibleRect.top;
MarginLayoutParams lp = getLayoutParams();
lp.bottomMargin = keyboardHeight;
if (mIsTablet) {
int margin = mParent.getResources()
.getDimensionPixelSize(R.dimen.snackbar_margin_tablet);
ApiCompatibilityUtils.setMarginStart(lp, margin);
lp.bottomMargin += margin;
int width = mParent.getResources()
.getDimensionPixelSize(R.dimen.snackbar_width_tablet);
lp.width = Math.min(width, mParent.getWidth() - 2 * margin);
}
mView.setLayoutParams(lp);
}
}
public MarginAnimation(ViewGroup target, int finalLeft, int finalTop,
int finalRight, int finalBottom) {
this.finalBottom = finalBottom;
this.finalTop = finalTop;
this.finalRight = finalRight;
this.finalLeft = finalLeft;
originLayoutParams = (MarginLayoutParams) target.getLayoutParams();
originBottom = originLayoutParams.bottomMargin;
originLeft = originLayoutParams.leftMargin;
originRight = originLayoutParams.rightMargin;
originTop = originLayoutParams.topMargin;
spanLeft = originLeft - this.finalLeft;
spanRight = originRight - this.finalRight;
spanBottom = originBottom - this.finalBottom;
spanTop = originTop - this.finalTop;
mTarget = target;
setDuration(250);
}
private void updatePosition() {
MarginLayoutParams lp = null;
if (mContainerType == ContainerType.STATUSBAR) {
lp = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT,
mHeightPx);
((FrameLayout.LayoutParams)lp).gravity = mPosition == Position.TOP ?
Gravity.TOP : Gravity.BOTTOM;
} else if (mContainerType == ContainerType.KEYGUARD) {
lp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
mHeightPx);
if (mPosition == Position.TOP) {
((RelativeLayout.LayoutParams)lp).addRule(RelativeLayout.ALIGN_PARENT_TOP,
RelativeLayout.TRUE);
} else {
((RelativeLayout.LayoutParams)lp).addRule(RelativeLayout.ALIGN_PARENT_BOTTOM,
RelativeLayout.TRUE);
}
}
if (lp != null) {
lp.setMargins(0, mPosition == Position.TOP ? mMarginPx : 0,
0, mPosition == Position.BOTTOM ? mMarginPx : 0);
setLayoutParams(lp);
}
}
public void setMargins(final View view, final int left, final int top,
final int right, final int bottom) {
activity_.runOnUiThread(new Runnable() {
@Override
public void run() {
ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) view
.getLayoutParams();
params.setMargins(left, top, right, bottom);
}
});
}
/**
* @see android.view.ViewGroup.MarginLayoutParams#getMarginEnd()
*/
public static int getMarginEnd(MarginLayoutParams layoutParams) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
return layoutParams.getMarginEnd();
} else {
return layoutParams.rightMargin;
}
}
@SuppressLint({"NewApi"})
public static void scaleView(View view) {
if (view instanceof TextView) {
TextView textView = (TextView) view;
setTextSize(textView, textView.getTextSize());
}
LayoutParams params = view.getLayoutParams();
if (params != null) {
int width = Integer.MIN_VALUE;
int height = Integer.MIN_VALUE;
if (!(params.width == -2 || params.width == -1)) {
width = params.width;
}
if (!(params.height == -2 || params.height == -1)) {
height = params.height;
}
setViewSize(view, width, height);
setPadding(view, view.getPaddingLeft(), view.getPaddingTop(), view.getPaddingRight(), view.getPaddingBottom());
}
if (view.getLayoutParams() instanceof MarginLayoutParams) {
MarginLayoutParams mMarginLayoutParams = (MarginLayoutParams) view.getLayoutParams();
if (mMarginLayoutParams != null) {
setMargin(view, mMarginLayoutParams.leftMargin, mMarginLayoutParams.topMargin, mMarginLayoutParams.rightMargin, mMarginLayoutParams.bottomMargin);
}
}
if (VERSION.SDK_INT >= 16) {
int minWidth = scaleValue(view.getContext(), (float) view.getMinimumWidth());
int minHeight = scaleValue(view.getContext(), (float) view.getMinimumHeight());
view.setMinimumWidth(minWidth);
view.setMinimumHeight(minHeight);
}
}
/**
* @see android.view.ViewGroup.MarginLayoutParams#getMarginEnd()
*/
public static int getMarginEnd(MarginLayoutParams layoutParams) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
return layoutParams.getMarginEnd();
} else {
return layoutParams.rightMargin;
}
}
public void restoreMarginLayoutParams(MarginLayoutParams params) {
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));
}
public void adjustChildren(int widthMeasureSpec, int heightMeasureSpec) {
if (Log.isLoggable(TAG, 3)) {
Log.d(TAG, "adjustChildren: " + this.mHost + " widthMeasureSpec: " + MeasureSpec.toString(widthMeasureSpec) + " heightMeasureSpec: " + MeasureSpec.toString(heightMeasureSpec));
}
int widthHint = MeasureSpec.getSize(widthMeasureSpec);
int heightHint = MeasureSpec.getSize(heightMeasureSpec);
if (Log.isLoggable(TAG, 3)) {
Log.d(TAG, "widthHint = " + widthHint + " , heightHint = " + heightHint);
}
int N = this.mHost.getChildCount();
for (int i = 0; i < N; i++) {
View view = this.mHost.getChildAt(i);
LayoutParams params = view.getLayoutParams();
if (Log.isLoggable(TAG, 3)) {
Log.d(TAG, "should adjust " + view + " " + params);
}
if (params instanceof PercentLayoutParams) {
PercentLayoutInfo info = ((PercentLayoutParams) params).getPercentLayoutInfo();
if (Log.isLoggable(TAG, 3)) {
Log.d(TAG, "using " + info);
}
if (info != null) {
supportTextSize(widthHint, heightHint, view, info);
supportPadding(widthHint, heightHint, view, info);
supportMinOrMaxDimesion(widthHint, heightHint, view, info);
if (params instanceof MarginLayoutParams) {
info.fillMarginLayoutParams((MarginLayoutParams) params, widthHint, heightHint);
} else {
info.fillLayoutParams(params, widthHint, heightHint);
}
}
}
}
}
private int getTranslationYBottom() {
int translationY = view.getHeight();
LayoutParams layoutParams = view.getLayoutParams();
if (layoutParams instanceof MarginLayoutParams) {
translationY += ((MarginLayoutParams) layoutParams).bottomMargin;
}
return translationY;
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
super.applyTransformation(interpolatedTime, t);
float diff = (mTo - mFrom) * interpolatedTime;
((MarginLayoutParams)mView.getLayoutParams()).leftMargin = (int)(mFrom + diff);
mView.requestLayout();
}
/**
* @see android.view.ViewGroup.MarginLayoutParams#setMarginStart(int)
*/
public static void setMarginStart(MarginLayoutParams layoutParams, int start) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
layoutParams.setMarginStart(start);
} else {
layoutParams.leftMargin = start;
}
}
public static void placeViewAt(final View view, final int x, final int y, final int w,
final int h) {
final ViewGroup.LayoutParams lp = view.getLayoutParams();
if (lp instanceof MarginLayoutParams) {
final MarginLayoutParams marginLayoutParams = (MarginLayoutParams)lp;
marginLayoutParams.width = w;
marginLayoutParams.height = h;
marginLayoutParams.setMargins(x, y, 0, 0);
}
}
public static MarginLayoutParams newLayoutParam(final ViewGroup placer, final int width,
final int height) {
if (placer instanceof FrameLayout) {
return new FrameLayout.LayoutParams(width, height);
} else if (placer instanceof RelativeLayout) {
return new RelativeLayout.LayoutParams(width, height);
} else if (placer == null) {
throw new NullPointerException("placer is null");
} else {
throw new IllegalArgumentException("placer is neither FrameLayout nor RelativeLayout: "
+ placer.getClass().getName());
}
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mListView = (ListView) getView().findViewById(android.R.id.list);
int marginTop = getActivity().getResources().getDimensionPixelSize(
R.dimen.search_engine_list_margin_top);
MarginLayoutParams layoutParams = (MarginLayoutParams) mListView.getLayoutParams();
layoutParams.setMargins(0, marginTop, 0, 0);
mListView.setLayoutParams(layoutParams);
mListView.setAdapter(mSearchEngineAdapter);
mListView.setDivider(null);
}
/**
* @param view
* @return the MarginLayoutParams of a view. maybe null.
*/
public static MarginLayoutParams getViewMarginLayoutParams(View view) {
ViewGroup.LayoutParams params = null;
if (null != view) {
params = view.getLayoutParams();
}
if (params instanceof MarginLayoutParams) {
MarginLayoutParams marginLayoutParams = (MarginLayoutParams) params;
return marginLayoutParams;
}
return null;
}
/**
* Update layout params for grid item view with appropriate vertical spacing since view re-use could change the spacing.
*/
private void updateGridItemLayoutParams(MultiColumnListViewHolder gridItemViewHolder, int row) {
if (gridItemViewHolder != null) {
View gridItemView = gridItemViewHolder.getGridItemView();
if (gridItemView != null) {
LayoutParams lp = gridItemView.getLayoutParams();
if (lp instanceof MarginLayoutParams) {
MarginLayoutParams mlp = (MarginLayoutParams) lp;
int numRows = getCount();
mlp.topMargin = (row == 0 ? gridItemVerticalSpacing : gridItemVerticalSpacing / 2);
mlp.bottomMargin = (row == numRows - 1 ? gridItemVerticalSpacing : gridItemVerticalSpacing / 2);
}
}
}
}
public static void placeViewAt(final View view, final int x, final int y, final int w,
final int h) {
final ViewGroup.LayoutParams lp = view.getLayoutParams();
if (lp instanceof MarginLayoutParams) {
final MarginLayoutParams marginLayoutParams = (MarginLayoutParams)lp;
marginLayoutParams.width = w;
marginLayoutParams.height = h;
marginLayoutParams.setMargins(x, y, 0, 0);
}
}
@BindingAdapter("android:translationYPercent")
public static void bindTranslationYPercent(View view, float percent) {
View parent = (View) view.getParent();
MarginLayoutParams layoutParams = (MarginLayoutParams) view.getLayoutParams();
int remainingHeight = parent.getMeasuredHeight() - layoutParams.bottomMargin;
view.setTranslationY(-1 * percent * remainingHeight);
}
/**
* Add the top margin size equals status bar's height for view.
*
* @param view The view.
*/
public static void addMarginTopEqualStatusBarHeight(@NonNull View view) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) return;
view.setTag(TAG_OFFSET);
Object haveSetOffset = view.getTag(KEY_OFFSET);
if (haveSetOffset != null && (Boolean) haveSetOffset) return;
MarginLayoutParams layoutParams = (MarginLayoutParams) view.getLayoutParams();
layoutParams.setMargins(layoutParams.leftMargin,
layoutParams.topMargin + getStatusBarHeight(),
layoutParams.rightMargin,
layoutParams.bottomMargin);
view.setTag(KEY_OFFSET, true);
}
/**
* Subtract the top margin size equals status bar's height for view.
*
* @param view The view.
*/
public static void subtractMarginTopEqualStatusBarHeight(@NonNull View view) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) return;
Object haveSetOffset = view.getTag(KEY_OFFSET);
if (haveSetOffset == null || !(Boolean) haveSetOffset) return;
MarginLayoutParams layoutParams = (MarginLayoutParams) view.getLayoutParams();
layoutParams.setMargins(layoutParams.leftMargin,
layoutParams.topMargin - getStatusBarHeight(),
layoutParams.rightMargin,
layoutParams.bottomMargin);
view.setTag(KEY_OFFSET, false);
}
/**
* @see android.view.ViewGroup.MarginLayoutParams#setMarginStart(int)
*/
public static void setMarginStart(MarginLayoutParams layoutParams, int start) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
layoutParams.setMarginStart(start);
} else {
layoutParams.leftMargin = start;
}
}
public static void placeViewAt(final View view, final int x, final int y, final int w,
final int h) {
final ViewGroup.LayoutParams lp = view.getLayoutParams();
if (lp instanceof MarginLayoutParams) {
final MarginLayoutParams marginLayoutParams = (MarginLayoutParams)lp;
marginLayoutParams.width = w;
marginLayoutParams.height = h;
marginLayoutParams.setMargins(x, y, 0, 0);
}
}
private void animateFromOffscreenToLeftPane(View view) {
((MarginLayoutParams)view.getLayoutParams()).width = mLeftPaneWidth;
view.requestLayout();
Animation animation = new LeftMarginAnimation(view, -mLeftPaneWidth, 0);
view.startAnimation(animation);
}