Android中Snackbar的使用方法及小技巧

dependencies {
 compile 'com.android.support:design:23.4.0'
}

Snackbar.make(mOpenTv, "消息内容", Snackbar.LENGTH_SHORT)
  .setAction("确定", new View.OnClickListener() {
  @Override
  public void onClick(View v) {
  }
  })
  .show();

 Snackbar sb = Snackbar.make(mOpenTv, "消息内容", Snackbar.LENGTH_SHORT);
 sb.setCallback(new Snackbar.Callback() {
 @Override
 public void onDismissed(Snackbar snackbar, int event) {
 super.onDismissed(snackbar, event);
 // Snackbar关闭时回调
 }

 @Override
 public void onShown(Snackbar snackbar) {
 super.onShown(snackbar);
 // Snackbar打开时回调
 }
 });
 sb.show();

 public static Snackbar make(@NonNull View view, @NonNull CharSequence text,
  @Duration int duration) {
 Snackbar snackbar = new Snackbar(findSuitableParent(view));
 snackbar.setText(text);
 snackbar.setDuration(duration);
 return snackbar;
 }

 private static ViewGroup findSuitableParent(View view) {
 ViewGroup fallback = null;
 do {
  if (view instanceof CoordinatorLayout) {
  // We've found a CoordinatorLayout, use it
  return (ViewGroup) view;
  } else if (view instanceof FrameLayout) {
  if (view.getId() == android.R.id.content) {
   // If we've hit the decor content view, then we didn't find a CoL in the
   // hierarchy, so use it.
   return (ViewGroup) view;
  } else {
   // It's not the content view but we'll use it as our fallback
   fallback = (ViewGroup) view;
  }
  }

  if (view != null) {
  // Else, we will loop and crawl up the view hierarchy and try to find a parent
  final ViewParent parent = view.getParent();
  view = parent instanceof View ? (View) parent : null;
  }
 } while (view != null);

 // If we reach here then we didn't find a CoL or a suitable content view so we'll fallback
 return fallback;
 }

 <android.support.design.widget.CoordinatorLayout
 android:layout_width="match_parent"
 android:layout_height="100dp">

 <TextView
  android:id="@+id/tv_open_snackbar"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:gravity="center"
  android:text="打开Snackbar"
  android:textSize="28sp"/>
 </android.support.design.widget.CoordinatorLayout>

 Snackbar sb = Snackbar.make(mOpenTv, "消息内容", Snackbar.LENGTH_SHORT);
 sb.setAction("确定", new View.OnClickListener() {
  @Override
  public void onClick(View v) {
  }
 });
 sb.setActionTextColor(Color.YELLOW);
 sb.show();

 /**
 * Returns the {@link Snackbar}'s view.
 */
 @NonNull
 public View getView() {
 return mView;
 }

  // Now inflate our content. We need to do this manually rather than using an <include>
  // in the layout since older versions of the Android do not inflate includes with
  // the correct Context.
  LayoutInflater.from(context).inflate(R.layout.design_layout_snackbar_include, this);

<merge xmlns:android="http://schemas.android.com/apk/res/android">

 <TextView
  android:id="@+id/snackbar_text"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_weight="1"
  android:paddingTop="@dimen/design_snackbar_padding_vertical"
  android:paddingBottom="@dimen/design_snackbar_padding_vertical"
  android:paddingLeft="@dimen/design_snackbar_padding_horizontal"
  android:paddingRight="@dimen/design_snackbar_padding_horizontal"
  android:textAppearance="@style/TextAppearance.Design.Snackbar.Message"
  android:maxLines="@integer/design_snackbar_text_max_lines"
  android:layout_gravity="center_vertical|left|start"
  android:ellipsize="end"
  android:textAlignment="viewStart"/>

 <Button
  android:id="@+id/snackbar_action"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_marginLeft="@dimen/design_snackbar_extra_spacing_horizontal"
  android:layout_marginStart="@dimen/design_snackbar_extra_spacing_horizontal"
  android:layout_gravity="center_vertical|right|end"
  android:paddingTop="@dimen/design_snackbar_padding_vertical"
  android:paddingBottom="@dimen/design_snackbar_padding_vertical"
  android:paddingLeft="@dimen/design_snackbar_padding_horizontal"
  android:paddingRight="@dimen/design_snackbar_padding_horizontal"
  android:visibility="gone"
  android:textColor="?attr/colorAccent"
  style="?attr/borderlessButtonStyle"/>
</merge>

 Snackbar sb = Snackbar.make(mOpenTv, "消息内容", Snackbar.LENGTH_SHORT);
 sb.setAction("确定", new View.OnClickListener() {
  @Override
  public void onClick(View v) {
  }
 });
 sb.setActionTextColor(Color.YELLOW);
 View view = sb.getView();
 TextView tv = (TextView) view.findViewById(R.id.snackbar_text);
 tv.setTextColor(Color.RED);
 sb.show();

  View view = sb.getView();
  view.setBackgroundColor(Color.RED);

  Snackbar sb = Snackbar.make(mOpenTv, "消息内容", Snackbar.LENGTH_SHORT);
  sb.setAction("确定", new View.OnClickListener() {
   @Override
   public void onClick(View v) {
   }
  });
  sb.setActionTextColor(Color.YELLOW);
  View view = sb.getView();
  TextView tv = (TextView) view.findViewById(R.id.snackbar_text);
  Drawable d = ContextCompat.getDrawable(this, R.drawable.warn);
  d.setBounds(0, 0, d.getMinimumWidth(), d.getMinimumHeight());
  tv.setCompoundDrawables(d, null, null, null); // 给TextView左边添加图标
  tv.setGravity(Gravity.CENTER); // 让文字居中
  sb.show();
 }