Android圓環形顏色選擇器：HoloColorPicker

jopen 10年前發布 | 81K 次閱讀 Android開發移動開發 HoloColorPicker

HoloColorPicker實現圓環形顏色選擇器，可以改變顏色飽和度來選擇顏色。選擇顏色時，可以用手指沿著圓環滑動一個滑塊，從而選擇顏色。

添加以下XML至你的布局中：

<com.larswerkman.holocolorpicker.ColorPicker
    android:id="@+id/picker"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>

To add a Saturation/Value bar to your layout add this to your xml

<com.larswerkman.holocolorpicker.SVBar
    android:id="@+id/svbar"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>

The same goes for the Opacity bar

<com.larswerkman.holocolorpicker.OpacityBar
    android:id="@+id/opacitybar"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>

Saturation bar

<com.larswerkman.holocolorpicker.SaturationBar
    android:id="@+id/saturationbar"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>

and a Value bar

<com.larswerkman.holocolorpicker.ValueBar
    android:id="@+id/valuebar"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>

To connect the bars with the colorpicker and to get the selected color.

ColorPicker picker = (ColorPicker) findViewById(R.id.picker);
SVBar svBar = (SVBar) findViewById(R.id.svbar);
OpacityBar opacityBar = (OpacityBar) findViewById(R.id.opacitybar);
SaturationBar saturationBar = (SaturationBar) findViewById(R.id.saturationbar);
ValueBar valueBar = (ValueBar) findViewById(R.id.valuebar);

picker.addSVBar(svBar);
picker.addOpacityBar(opacityBar);
picker.addSaturationBar(saturationBar);
picker.addValueBar(valueBar);

//To get the color
picker.getColor();

//To set the old selected color u can do it like this
picker.setOldCenterColor(picker.getColor());
// adds listener to the colorpicker which is implemented
//in the activity
picker.setOnColorChangedListener(this);