●setRotate(int axis, float degrees) 設置色調android
參數一(axis):顏色編號1(紅),2(綠),3(藍)canvas
參數二(degrees):修改的值(這裏爲角度值0~360)app
方法調用ide
ColorMatrix colorMatrixS=new ColorMatrix(); colorMatrixS.setRotate(0,one);//紅 colorMatrixS.setRotate(1,one);//綠 colorMatrixS.setRotate(2,one);//藍
●setSaturation(float sat) 設置飽和度佈局
參數(sat):值爲1時是原圖,大於1飽和度增長,小於1時飽和度減小,值爲0時圖像爲灰色post
方法調用this
colorMatrixB.setSaturation(three);
●setScale(float rScale, float gScale, float bScale, float aScale)設置亮度code
參數一(rScale):紅色xml
參數二(gScale):綠色three
參數三(bScale):藍色
參數四(aScale):透明度
各個參數的值對應調節各個顏色的亮度,0表明全黑1表明原圖,通常將透明度的值固定設置爲1(原圖效果),經過調節三元色的值來調節亮度。
方法調用
colorMatrixL.setScale(two,two,two,1);
Activity
public class MainActivity extends AppCompatActivity implements SeekBar.OnSeekBarChangeListener{ SeekBar seekBarone,seekbartwo,seekbarthree; ImageView imageView; float one=1,two=1,three=1; private Bitmap baseBitmap,copyBitmap; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); imageView = findViewById(R.id.img); seekBarone=findViewById(R.id.one); seekbartwo=findViewById(R.id.two); seekbarthree=findViewById(R.id.three); seekBarone.setOnSeekBarChangeListener(this); seekbartwo.setOnSeekBarChangeListener(this); seekbarthree.setOnSeekBarChangeListener(this); baseBitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.aaa); //既然是複製一張與原圖如出一轍的圖片那麼這張複製圖片的畫紙的寬度和高度以及分辨率都要與原圖同樣,copyBitmap就爲一張與原圖相同尺寸分辨率的空白畫紙 copyBitmap=Bitmap.createBitmap(baseBitmap.getWidth(), baseBitmap.getHeight(), baseBitmap.getConfig()); } @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { switch (seekBar.getId()){ case R.id.one: one=progress*1.0f/seekBar.getMax()*360; break; case R.id.two: two=progress*1.0f/(seekBar.getMax()-50); break; case R.id.three: three=progress*1.0f/(seekBar.getMax()-50); break; } Paint paint=new Paint(); Canvas canvas=new Canvas(copyBitmap); ColorMatrix colorMatrixS=new ColorMatrix(); colorMatrixS.setRotate(0,one); colorMatrixS.setRotate(1,one); colorMatrixS.setRotate(2,one); ColorMatrix colorMatrixL=new ColorMatrix(); colorMatrixL.setScale(two,two,two,1); ColorMatrix colorMatrixB=new ColorMatrix(); colorMatrixB.setSaturation(three); ColorMatrix colorMatriximg=new ColorMatrix(); // 經過postConcat()方法能夠將以上效果疊加到一塊兒 colorMatriximg.postConcat(colorMatrixB); colorMatriximg.postConcat(colorMatrixL); colorMatriximg.postConcat(colorMatrixS); ColorMatrixColorFilter colorMatrixColorFilter=new ColorMatrixColorFilter(colorMatriximg); paint.setColorFilter(colorMatrixColorFilter); canvas.drawBitmap(baseBitmap,new Matrix(),paint); imageView.setImageBitmap(copyBitmap); } @Override public void onStartTrackingTouch(SeekBar seekBar) { } @Override public void onStopTrackingTouch(SeekBar seekBar) { } }
佈局代碼
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.yuyigufen.customview.MainActivity"> <ImageView android:layout_width="match_parent" android:src="@mipmap/aaa" android:id="@+id/img" android:layout_height="200dp" /> <TextView android:layout_width="wrap_content" android:text="色調" android:layout_marginTop="20dp" android:layout_height="wrap_content" /> <android.support.v7.widget.AppCompatSeekBar android:layout_width="match_parent" android:layout_marginLeft="10dp" android:id="@+id/one" android:layout_marginRight="10dp" android:layout_height="wrap_content" /> <TextView android:layout_width="wrap_content" android:text="亮度" android:layout_marginTop="20dp" android:layout_height="wrap_content" /> <android.support.v7.widget.AppCompatSeekBar android:layout_width="match_parent" android:layout_marginLeft="10dp" android:id="@+id/two" android:progress="50" android:layout_marginRight="10dp" android:layout_height="wrap_content" /> <TextView android:layout_width="wrap_content" android:text="飽和度" android:layout_marginTop="20dp" android:layout_height="wrap_content" /> <android.support.v7.widget.AppCompatSeekBar android:layout_width="match_parent" android:layout_marginLeft="10dp" android:id="@+id/three" android:progress="50" android:layout_marginRight="10dp" android:layout_height="wrap_content" /> </LinearLayout>