#sachsolution

A toggle button allows the user to change a setting between two states. You can add a basic toggle button to your layout with the ToggleButton object. Android 4.0 (API level 14) introduces another kind of toggle button called a switch that provides a slider control, which you can add with a Switch object. SwitchCompat is a version of the Switch widget which runs on devices back to API 7. If you need to change a button's state yourself, you can use the CompoundButton.setChecked() or CompoundButton.toggle() methods.

Radio buttons allow the user to select one option from a set. You should use radio buttons for optional sets that are mutually exclusive if you think that the user needs to see all available options side-by-side. If it's not necessary to show all options side-by-side, use a spinner instead.

When the user selects a checkbox, the CheckBox object receives an on-click event. To define the click event handler for a checkbox, add the android:onClick attribute to the CheckBox element in your XML layout. The value for this attribute must be the name of the method you want to call in response to a click event. The Activity hosting the layout must then implement the corresponding method.

A SeekBar is an extension of ProgressBar that adds a draggable thumb. The user can touch the thumb and drag left or right to set the current progress level or use the arrow keys. Placing focusable widgets to the left or right of a SeekBar is discouraged. Clients of the SeekBar can attach a SeekBar.OnSeekBarChangeListener to be notified of the user's actions.

A RatingBar is an extension of SeekBar and ProgressBar that shows a rating in stars. The user can touch/drag or use arrow keys to set the rating when using the default size RatingBar. The smaller RatingBar style ( ratingBarStyleSmall) and the larger indicator-only style (ratingBarStyleIndicator) do not support user interaction and should only be used as indicators. When using a RatingBar that supports user interaction, placing widgets to the left or right of the RatingBar is discouraged. The number of stars set (via setNumStars(int) or in an XML layout) will be shown when the layout width is set to wrap content (if another layout width is set, the results may be unpredictable).