用进度条实现控制图片旋转·平移·缩放·倾斜

 1 public class MainActivity extends AppCompatActivity implements SeekBar.OnSeekBarChangeListener{
 2 
 3 private SeekBar sbScale;
 4 private SeekBar sbRotate;
 5 private SeekBar sbSweek;
 6 private SeekBar sbTran;
 7 private ImageView imageView;
 8 
 9 private  int tran;
10 private  float scale;
11 private  float rotate;
12 private  float sweek;
13 
14 @Override
15 protected void onCreate(Bundle savedInstanceState) {
16 super.onCreate(savedInstanceState);
17         setContentView(R.layout.activity_main);
18 sbRotate=(SeekBar)findViewById(R.id.progress_xz);
19 sbScale=(SeekBar)findViewById(R.id.progress_sf);
20 sbSweek=(SeekBar)findViewById(R.id.progress_qx);
21 sbTran=(SeekBar)findViewById(R.id.progress_py);
22 imageView=(ImageView)findViewById(R.id.image1);
23 
24 sbSweek.setOnSeekBarChangeListener(this);
25 sbTran.setOnSeekBarChangeListener(this);
26 sbScale.setOnSeekBarChangeListener(this);
27 sbRotate.setOnSeekBarChangeListener(this);
28     }
29 
30 @Override
31 public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
32 switch (seekBar.getId()){
33 case R.id.progress_py:
34 tran=progress;
35 break;
36 case R.id.progress_qx:
37 sweek = progress/10f;
38 break;
39 case R.id.progress_sf:
40 scale=0.5f+progress/10f;
41 break;
42 case R.id.progress_xz:
43 rotate=progress;
44 break;
45         }
46         Matrix matrix=new Matrix();
47         matrix.postRotate(rotate,imageView.getWidth()/2,imageView.getHeight()/2);
48         matrix.postSkew(sweek,0);
49         matrix.postTranslate(tran,0);
50         matrix.postScale(scale,scale);
51 imageView.setImageMatrix(matrix);
52     }
53 
54 @Override
55 public void onStartTrackingTouch(SeekBar seekBar) {
56 
57     }
58 
59 @Override
60 public void onStopTrackingTouch(SeekBar seekBar) {
61 
62     }
63 }

  1 <?xml version="1.0" encoding="utf-8"?>
  2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  3 xmlns:tools="http://schemas.android.com/tools"
  4 android:id="@+id/activity_main"
  5 android:layout_width="match_parent"
  6 android:layout_height="match_parent"
  7 android:orientation="vertical"
  8 tools:context="com.example.homeworkpic.MainActivity">
  9 
 10  <LinearLayout
 11 android:layout_width="match_parent"
 12 android:layout_height="wrap_content"
 13 android:orientation="horizontal"
 14 android:paddingRight="10dp">
 15      <TextView
 16 android:layout_width="wrap_content"
 17 android:layout_height="wrap_content"
 18 android:text="缩放"
 19 android:layout_gravity="center_vertical"
 20 android:layout_marginLeft="20dp"
 21 android:layout_marginRight="20dp"/>
 22      <RelativeLayout
 23 android:layout_width="match_parent"
 24 android:layout_height="wrap_content">
 25          <SeekBar
 26 android:id="@+id/progress_sf"
 27 android:max="15"
 28 android:layout_width="match_parent"
 29 android:layout_height="wrap_content" />
 30          <TextView
 31 android:layout_width="wrap_content"
 32 android:layout_height="wrap_content"
 33 android:layout_below="@id/progress_sf"
 34 android:text="0.5"/>
 35          <TextView
 36 android:layout_width="wrap_content"
 37 android:layout_height="wrap_content"
 38 android:layout_below="@id/progress_sf"
 39 android:layout_alignParentRight="true"
 40 android:text="2"/>
 41      </RelativeLayout>
 42  </LinearLayout>
 43 
 44     <LinearLayout
 45 android:layout_width="match_parent"
 46 android:layout_height="wrap_content"
 47 android:orientation="horizontal"
 48 android:paddingRight="10dp">
 49         <TextView
 50 android:layout_width="wrap_content"
 51 android:layout_height="wrap_content"
 52 android:text="旋转"
 53 android:layout_gravity="center_vertical"
 54 android:layout_marginLeft="20dp"
 55 android:layout_marginRight="20dp"/>
 56         <RelativeLayout
 57 android:layout_width="match_parent"
 58 android:layout_height="wrap_content">
 59             <SeekBar
 60 android:id="@+id/progress_xz"
 61 android:max="15"
 62 android:layout_width="match_parent"
 63 android:layout_height="wrap_content" />
 64             <TextView
 65 android:layout_width="wrap_content"
 66 android:layout_height="wrap_content"
 67 android:layout_below="@id/progress_xz"
 68 android:text="0"/>
 69             <TextView
 70 android:layout_width="wrap_content"
 71 android:layout_height="wrap_content"
 72 android:layout_below="@id/progress_xz"
 73 android:layout_alignParentRight="true"
 74 android:text="180"/>
 75         </RelativeLayout>
 76     </LinearLayout>
 77 
 78     <LinearLayout
 79 android:layout_width="match_parent"
 80 android:layout_height="wrap_content"
 81 android:orientation="horizontal"
 82 android:paddingRight="10dp">
 83         <TextView
 84 android:layout_width="wrap_content"
 85 android:layout_height="wrap_content"
 86 android:text="倾斜"
 87 android:layout_gravity="center_vertical"
 88 android:layout_marginLeft="20dp"
 89 android:layout_marginRight="20dp"/>
 90         <RelativeLayout
 91 android:layout_width="match_parent"
 92 android:layout_height="wrap_content">
 93             <SeekBar
 94 android:id="@+id/progress_qx"
 95 android:max="10"
 96 android:layout_width="match_parent"
 97 android:layout_height="wrap_content" />
 98             <TextView
 99 android:layout_width="wrap_content"
100 android:layout_height="wrap_content"
101 android:layout_below="@id/progress_qx"
102 android:text="0"/>
103             <TextView
104 android:layout_width="wrap_content"
105 android:layout_height="wrap_content"
106 android:layout_below="@id/progress_qx"
107 android:layout_alignParentRight="true"
108 android:text="1"/>
109         </RelativeLayout>
110     </LinearLayout>
111     <LinearLayout
112 android:layout_width="match_parent"
113 android:layout_height="wrap_content"
114 android:orientation="horizontal"
115 android:paddingRight="10dp">
116         <TextView
117 android:layout_width="wrap_content"
118 android:layout_height="wrap_content"
119 android:text="平移"
120 android:layout_gravity="center_vertical"
121 android:layout_marginLeft="20dp"
122 android:layout_marginRight="20dp"/>
123         <RelativeLayout
124 android:layout_width="match_parent"
125 android:layout_height="wrap_content">
126             <SeekBar
127 android:id="@+id/progress_py"
128 android:max="10"
129 android:layout_width="match_parent"
130 android:layout_height="wrap_content" />
131             <TextView
132 android:layout_width="wrap_content"
133 android:layout_height="wrap_content"
134 android:layout_below="@id/progress_py"
135 android:text="0"/>
136             <TextView
137 android:layout_width="wrap_content"
138 android:layout_height="wrap_content"
139 android:layout_below="@id/progress_py"
140 android:layout_alignParentRight="true"
141 android:text="200"/>
142         </RelativeLayout>
143     </LinearLayout>
144 
145     <ImageView
146 android:id="@+id/image1"
147 android:layout_width="wrap_content"
148 android:layout_height="wrap_content"
149 android:layout_gravity="center"
150 android:scaleType="matrix"
151 android:src="http://www.mamicode.com/@mipmap/ic_launcher"/>
152 </LinearLayout>