Android開源：BrushView - 簡單視圖更改畫筆大小，Alpha和顏色

效果

x

安裝

In your build.gradle project

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

In your build.gradle app

dependencies {
    ...
    compile 'com.github.Andreu35:BrushView:v.1.0'
    ...
}

使用

In your layout.xml

<com.are.brushview.BrushView
  android:id="@+id/brushView"
  android:layout_width="220dp"
  android:layout_height="220dp"
  android:layout_gravity="center"
  android:layout_margin="20dp"
    app:brush_size="50"
    app:brush_alpha="255"
    app:brush_color="@color/colorPrimary"/>

In your Activity.java

public class MainActivity extends AppCompatActivity {
    private BrushView brushView;
    ...


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    /**
     * Initialize Views
     */
    brushView = (BrushView) findViewById(R.id.brushView);
    ...

    /**
     * SeekBar Listeners
     */
    seekBarSize.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            txtSize.setText(String.valueOf(progress));
            brushView.setRadius(progress);
        }
    });

    seekBarAlpha.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            txtAlpha.setText(String.valueOf(progress));
            brushView.setAlphaValue(progress);
        }
    });

    gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            brushView.setColor(itemsColors.get(position).getColor());
        }
    });
}

}</code></pre> 
  
App using BrushView
 
  
Cards
 
  
許可
 
  
Copyright (C) 2017 Andreu35

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0


Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.</code></pre>