[Snackbar] Support setting max lines programmatically

Resolves #2018 PiperOrigin-RevId: 427305265
material-components · Feb 9, 2022 · 4c7be52 · 4c7be52
1 parent ae16efd
commit 4c7be52
Showing 1 changed file with 30 additions and 19 deletions.
diff --git a/lib/java/com/google/android/material/snackbar/Snackbar.java b/lib/java/com/google/android/material/snackbar/Snackbar.java
@@ -36,6 +36,7 @@
 import android.view.ViewGroup;
 import android.view.ViewParent;
 import android.view.accessibility.AccessibilityManager;
+import android.widget.Button;
 import android.widget.FrameLayout;
 import android.widget.TextView;
 import androidx.annotation.ColorInt;
@@ -298,9 +299,7 @@ private static ViewGroup findSuitableParent(View view) {
    */
   @NonNull
   public Snackbar setText(@NonNull CharSequence message) {
-    final SnackbarContentLayout contentLayout = (SnackbarContentLayout) view.getChildAt(0);
-    final TextView tv = contentLayout.getMessageView();
-    tv.setText(message);
+    getMessageView().setText(message);
     return this;
   }
 
@@ -334,8 +333,7 @@ public Snackbar setAction(@StringRes int resId, View.OnClickListener listener) {
   @NonNull
   public Snackbar setAction(
       @Nullable CharSequence text, @Nullable final View.OnClickListener listener) {
-    final SnackbarContentLayout contentLayout = (SnackbarContentLayout) this.view.getChildAt(0);
-    final TextView tv = contentLayout.getActionView();
+    final TextView tv = getActionView();
     if (TextUtils.isEmpty(text) || listener == null) {
       tv.setVisibility(View.GONE);
       tv.setOnClickListener(null);
@@ -383,9 +381,7 @@ public int getDuration() {
    */
   @NonNull
   public Snackbar setTextColor(ColorStateList colors) {
-    final SnackbarContentLayout contentLayout = (SnackbarContentLayout) view.getChildAt(0);
-    final TextView tv = contentLayout.getMessageView();
-    tv.setTextColor(colors);
+    getMessageView().setTextColor(colors);
     return this;
   }
 
@@ -395,9 +391,17 @@ public Snackbar setTextColor(ColorStateList colors) {
    */
   @NonNull
   public Snackbar setTextColor(@ColorInt int color) {
-    final SnackbarContentLayout contentLayout = (SnackbarContentLayout) view.getChildAt(0);
-    final TextView tv = contentLayout.getMessageView();
-    tv.setTextColor(color);
+    getMessageView().setTextColor(color);
+    return this;
+  }
+
+  /**
+   * Sets the max line count of the message specified in {@link #setText(CharSequence)} and {@link
+   * #setText(int)}.
+   */
+  @NonNull
+  public Snackbar setTextMaxLines(int maxLines) {
+    getMessageView().setMaxLines(maxLines);
     return this;
   }
 
@@ -407,9 +411,7 @@ public Snackbar setTextColor(@ColorInt int color) {
    */
   @NonNull
   public Snackbar setActionTextColor(ColorStateList colors) {
-    final SnackbarContentLayout contentLayout = (SnackbarContentLayout) view.getChildAt(0);
-    final TextView tv = contentLayout.getActionView();
-    tv.setTextColor(colors);
+    getActionView().setTextColor(colors);
     return this;
   }
 
@@ -419,8 +421,7 @@ public Snackbar setActionTextColor(ColorStateList colors) {
    */
   @NonNull
   public Snackbar setMaxInlineActionWidth(@Dimension int width) {
-    final SnackbarContentLayout contentLayout = (SnackbarContentLayout) view.getChildAt(0);
-    contentLayout.setMaxInlineActionWidth(width);
+    getContentLayout().setMaxInlineActionWidth(width);
     return this;
   }
 
@@ -430,9 +431,7 @@ public Snackbar setMaxInlineActionWidth(@Dimension int width) {
    */
   @NonNull
   public Snackbar setActionTextColor(@ColorInt int color) {
-    final SnackbarContentLayout contentLayout = (SnackbarContentLayout) view.getChildAt(0);
-    final TextView tv = contentLayout.getActionView();
-    tv.setTextColor(color);
+    getActionView().setTextColor(color);
     return this;
   }
 
@@ -516,4 +515,16 @@ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
       }
     }
   }
+
+  private TextView getMessageView() {
+    return getContentLayout().getMessageView();
+  }
+
+  private Button getActionView() {
+    return getContentLayout().getActionView();
+  }
+
+  private SnackbarContentLayout getContentLayout() {
+    return (SnackbarContentLayout) view.getChildAt(0);
+  }
 }