Fix toasts. (cf3dd6bc) · Commits · e / os / android_frameworks_base

core/java/android/widget/Toast.java

+78 −81

Original line number	Diff line number	Diff line
		@@ -33,8 +33,6 @@ import android.view.WindowManagerImpl;
		import android.view.accessibility.AccessibilityEvent;
		import android.view.accessibility.AccessibilityManager;

		import java.lang.ref.WeakReference;

		/**
		* A toast is a view containing a quick little message for the user. The toast class
		* helps you create and show those.
		@@ -72,11 +70,6 @@ public class Toast {
		final Context mContext;
		final TN mTN;
		int mDuration;
		int mGravity = Gravity.CENTER_HORIZONTAL \| Gravity.BOTTOM;
		int mX, mY;
		float mHorizontalMargin;
		float mVerticalMargin;
		View mView;
		View mNextView;

		/**
		@@ -88,8 +81,8 @@ public class Toast {
		*/
		public Toast(Context context) {
		mContext = context;
		mTN = new TN(this);
		mY = context.getResources().getDimensionPixelSize(
		mTN = new TN();
		mTN.mY = context.getResources().getDimensionPixelSize(
		com.android.internal.R.dimen.toast_y_offset);
		}

		@@ -103,9 +96,11 @@ public class Toast {

		INotificationManager service = getService();
		String pkg = mContext.getPackageName();
		TN tn = mTN;
		tn.mNextView = mNextView;

		try {
		service.enqueueToast(pkg, mTN, mDuration);
		service.enqueueToast(pkg, tn, mDuration);
		} catch (RemoteException e) {
		// Empty
		}
		@@ -165,22 +160,22 @@ public class Toast {
		* notification
		*/
		public void setMargin(float horizontalMargin, float verticalMargin) {
		mHorizontalMargin = horizontalMargin;
		mVerticalMargin = verticalMargin;
		mTN.mHorizontalMargin = horizontalMargin;
		mTN.mVerticalMargin = verticalMargin;
		}

		/**
		* Return the horizontal margin.
		*/
		public float getHorizontalMargin() {
		return mHorizontalMargin;
		return mTN.mHorizontalMargin;
		}

		/**
		* Return the vertical margin.
		*/
		public float getVerticalMargin() {
		return mVerticalMargin;
		return mTN.mVerticalMargin;
		}

		/**
		@@ -189,9 +184,9 @@ public class Toast {
		* @see #getGravity
		*/
		public void setGravity(int gravity, int xOffset, int yOffset) {
		mGravity = gravity;
		mX = xOffset;
		mY = yOffset;
		mTN.mGravity = gravity;
		mTN.mX = xOffset;
		mTN.mY = yOffset;
		}

		/**
		@@ -200,21 +195,21 @@ public class Toast {
		* @see #getGravity
		*/
		public int getGravity() {
		return mGravity;
		return mTN.mGravity;
		}

		/**
		* Return the X offset in pixels to apply to the gravity's location.
		*/
		public int getXOffset() {
		return mX;
		return mTN.mX;
		}

		/**
		* Return the Y offset in pixels to apply to the gravity's location.
		*/
		public int getYOffset() {
		return mY;
		return mTN.mY;
		}

		/**
		@@ -281,21 +276,6 @@ public class Toast {
		tv.setText(s);
		}

		private void trySendAccessibilityEvent() {
		AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext);
		if (!accessibilityManager.isEnabled()) {
		return;
		}
		// treat toasts as notifications since they are used to
		// announce a transient piece of information to the user
		AccessibilityEvent event = AccessibilityEvent.obtain(
		AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED);
		event.setClassName(getClass().getName());
		event.setPackageName(mContext.getPackageName());
		mView.dispatchPopulateAccessibilityEvent(event);
		accessibilityManager.sendAccessibilityEvent(event);
		}

		// =======================================================================================
		// All the gunk below is the interaction with the Notification Service, which handles
		// the proper ordering of these system-wide.
		@@ -312,8 +292,6 @@ public class Toast {
		}

		private static class TN extends ITransientNotification.Stub {
		final Handler mHandler = new Handler();

		final Runnable mShow = new Runnable() {
		public void run() {
		handleShow();
		@@ -327,12 +305,20 @@ public class Toast {
		};

		private final WindowManager.LayoutParams mParams = new WindowManager.LayoutParams();
		private final WeakReference<Toast> mToast;
		final Handler mHandler = new Handler();

		int mGravity = Gravity.CENTER_HORIZONTAL \| Gravity.BOTTOM;
		int mX, mY;
		float mHorizontalMargin;
		float mVerticalMargin;


		View mView;
		View mNextView;

		WindowManagerImpl mWM;

		TN(Toast toast) {
		mToast = new WeakReference<Toast>(toast);
		TN() {
		// XXX This should be changed to use a Dialog, with a Theme.Toast
		// defined that sets up the layout params appropriately.
		final WindowManager.LayoutParams params = mParams;
		@@ -364,16 +350,14 @@ public class Toast {
		}

		public void handleShow() {
		final Toast toast = mToast.get();
		if (toast != null) {
		if (localLOGV) Log.v(TAG, "HANDLE SHOW: " + this + " mView=" + toast.mView
		+ " mNextView=" + toast.mNextView);
		if (toast.mView != toast.mNextView) {
		if (localLOGV) Log.v(TAG, "HANDLE SHOW: " + this + " mView=" + mView
		+ " mNextView=" + mNextView);
		if (mView != mNextView) {
		// remove the old view if necessary
		handleHide();
		toast.mView = toast.mNextView;
		mView = mNextView;
		mWM = WindowManagerImpl.getDefault();
		final int gravity = toast.mGravity;
		final int gravity = mGravity;
		mParams.gravity = gravity;
		if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.FILL_HORIZONTAL) {
		mParams.horizontalWeight = 1.0f;
		@@ -381,36 +365,49 @@ public class Toast {
		if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.FILL_VERTICAL) {
		mParams.verticalWeight = 1.0f;
		}
		mParams.x = toast.mX;
		mParams.y = toast.mY;
		mParams.verticalMargin = toast.mVerticalMargin;
		mParams.horizontalMargin = toast.mHorizontalMargin;
		if (toast.mView.getParent() != null) {
		if (localLOGV) Log.v(TAG, "REMOVE! " + toast.mView + " in " + this);
		mWM.removeView(toast.mView);
		mParams.x = mX;
		mParams.y = mY;
		mParams.verticalMargin = mVerticalMargin;
		mParams.horizontalMargin = mHorizontalMargin;
		if (mView.getParent() != null) {
		if (localLOGV) Log.v(TAG, "REMOVE! " + mView + " in " + this);
		mWM.removeView(mView);
		}
		if (localLOGV) Log.v(TAG, "ADD! " + toast.mView + " in " + this);
		mWM.addView(toast.mView, mParams);
		toast.trySendAccessibilityEvent();
		if (localLOGV) Log.v(TAG, "ADD! " + mView + " in " + this);
		mWM.addView(mView, mParams);
		trySendAccessibilityEvent();
		}
		}

		private void trySendAccessibilityEvent() {
		AccessibilityManager accessibilityManager =
		AccessibilityManager.getInstance(mView.getContext());
		if (!accessibilityManager.isEnabled()) {
		return;
		}
		// treat toasts as notifications since they are used to
		// announce a transient piece of information to the user
		AccessibilityEvent event = AccessibilityEvent.obtain(
		AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED);
		event.setClassName(getClass().getName());
		event.setPackageName(mView.getContext().getPackageName());
		mView.dispatchPopulateAccessibilityEvent(event);
		accessibilityManager.sendAccessibilityEvent(event);
		}

		public void handleHide() {
		final Toast toast = mToast.get();
		if (toast != null) {
		if (localLOGV) Log.v(TAG, "HANDLE HIDE: " + this + " mView=" + toast.mView);
		if (toast.mView != null) {
		if (localLOGV) Log.v(TAG, "HANDLE HIDE: " + this + " mView=" + mView);
		if (mView != null) {
		// note: checking parent() just to make sure the view has
		// been added... i have seen cases where we get here when
		// the view isn't yet added, so let's try not to crash.
		if (toast.mView.getParent() != null) {
		if (localLOGV) Log.v(TAG, "REMOVE! " + toast.mView + " in " + this);
		mWM.removeView(toast.mView);
		if (mView.getParent() != null) {
		if (localLOGV) Log.v(TAG, "REMOVE! " + mView + " in " + this);
		mWM.removeView(mView);
		}

		toast.mView = null;
		}
		mView = null;
		mNextView = null;
		}
		}
		}