继续浏览精彩内容
慕课网APP
程序员的梦工厂
打开
继续
感谢您的支持,我会继续努力的
赞赏金额会直接到老师账户
将二维码发送给自己后长按识别
微信支付
支付宝支付

5分钟实现Android中更换头像功能

白衣染霜花
关注TA
已关注
手记 126
粉丝 17
获赞 57

5分钟实现Android中更换头像功能

写在前面:
更换头像这个功能在用户界面几乎是100%出现的。通过拍摄照片或者调用图库中的图片,并且进行剪裁,来进行头像的设置。
功能相关截图如下:

                                               5badad590001589f02540475.jpg

5badad630001d23e02520450.jpg

5badad6c0001678a02590450.jpg

5badad740001f7c502520456.jpg

下面我们直接看看完整代码吧:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
public class UserActivity extends BaseActivity implements OnClickListener {
         private ImageView iv_photo;
         private Bitmap head;// 头像Bitmap
         private static String path = "/sdcard/myHead/";// sd路径
         @Override
         protected void onCreate(Bundle savedInstanceState) {
                 super.onCreate(savedInstanceState);
                 initView();
                 initListener();
         }
         private void initView() {
                 setContentView(R.layout.activity_user);
                 iv_photo = (ImageView) findViewById(R.id.iv_photo);
                 Bitmap bt = BitmapFactory.decodeFile(path + "head.jpg");// 从SD卡中找头像,转换成Bitmap
                 if (bt != null) {
                          @SuppressWarnings("deprecation")
                          Drawable drawable = new BitmapDrawable(bt);// 转换成drawable
                          iv_photo.setImageDrawable(drawable);
                 } else {
                          /**
                           * 如果SD里面没有则需要从服务器取头像,取回来的头像再保存在SD中
                           *
                           */
                 }
         }
         private void initListener() {
                 iv_photo.setOnClickListener(this);
         }
         
         @Override
         public void onClick(View v) {
                 switch (v.getId()) {
                 case R.id.iv_photo:// 更换头像
                          showTypeDialog();
                          break;
                 }
         }
         private void showTypeDialog() {
                 AlertDialog.Builder builder = new AlertDialog.Builder(this);
                 final AlertDialog dialog = builder.create();
                 View view = View.inflate(this, R.layout.dialog_select_photo, null);
                 TextView tv_select_gallery = (TextView) view.findViewById(R.id.tv_select_gallery);
                 TextView tv_select_camera = (TextView) view.findViewById(R.id.tv_select_camera);
                 tv_select_gallery.setOnClickListener(new OnClickListener() {// 在相册中选取
                          @Override
                          public void onClick(View v) {
                                   Intent intent1 = new Intent(Intent.ACTION_PICK, null);
                                   intent1.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");
                                   startActivityForResult(intent1, 1);
                                   dialog.dismiss();
                          }
                 });
                 tv_select_camera.setOnClickListener(new OnClickListener() {// 调用照相机
                          @Override
                          public void onClick(View v) {
                                   Intent intent2 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                                   intent2.putExtra(MediaStore.EXTRA_OUTPUT,
                                                    Uri.fromFile(new File(Environment.getExternalStorageDirectory(), "head.jpg")));
                                   startActivityForResult(intent2, 2);// 采用ForResult打开
                                   dialog.dismiss();
                          }
                 });
                 dialog.setView(view);
                 dialog.show();
         }
         @Override
         protected void onActivityResult(int requestCode, int resultCode, Intent data) {
                 switch (requestCode) {
                 case 1:
                          if (resultCode == RESULT_OK) {
                                   cropPhoto(data.getData());// 裁剪图片
                          }
                          break;
                 case 2:
                          if (resultCode == RESULT_OK) {
                                   File temp = new File(Environment.getExternalStorageDirectory() + "/head.jpg");
                                   cropPhoto(Uri.fromFile(temp));// 裁剪图片
                          }
                          break;
                 case 3:
                          if (data != null) {
                                   Bundle extras = data.getExtras();
                                   head = extras.getParcelable("data");
                                   if (head != null) {
                                            /**
                                             * 上传服务器代码
                                             */
                                            setPicToView(head);// 保存在SD卡中
                                            iv_photo.setImageBitmap(head);// 用ImageView显示出来
                                   }
                          }
                          break;
                 default:
                          break;
                 }
                 super.onActivityResult(requestCode, resultCode, data);
         }
         /**
          * 调用系统的裁剪功能
          *
          * @param uri
          */
         public void cropPhoto(Uri uri) {
                 Intent intent = new Intent("com.android.camera.action.CROP");
                 intent.setDataAndType(uri, "image/*");
                 intent.putExtra("crop", "true");
                 // aspectX aspectY 是宽高的比例
                 intent.putExtra("aspectX", 1);
                 intent.putExtra("aspectY", 1);
                 // outputX outputY 是裁剪图片宽高
                 intent.putExtra("outputX", 150);
                 intent.putExtra("outputY", 150);
                 intent.putExtra("return-data", true);
                 startActivityForResult(intent, 3);
         }
         private void setPicToView(Bitmap mBitmap) {
                 String sdStatus = Environment.getExternalStorageState();
                 if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) { // 检测sd是否可用
                          return;
                 }
                 FileOutputStream b = null;
                 File file = new File(path);
                 file.mkdirs();// 创建文件夹
                 String fileName = path + "head.jpg";// 图片名字
                 try {
                          b = new FileOutputStream(fileName);
                          mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, b);// 把数据写入文件
                 } catch (FileNotFoundException e) {
                          e.printStackTrace();
                 } finally {
                          try {
                                   // 关闭流
                                   b.flush();
                                   b.close();
                          } catch (IOException e) {
                                   e.printStackTrace();
                          }
                 }
         }
}

再添加以下权限

1
2
3
4
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
<uses-permission android:name="android.permission.INTERNET" />

Dialog的xml文件如下:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    <TextView
        android:id="@+id/tv_select_gallery"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:padding="20dp"
        android:text="从图库中选取"
        android:textColor="#000"
        android:textSize="20sp" />
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp"
        android:background="#000" />
    <TextView
        android:id="@+id/tv_select_camera"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:padding="20dp"
        android:text="拍摄照片"
        android:textColor="#000"
        android:textSize="20sp" />
</LinearLayout>

代码的注释还算全面,仔细阅读一定能看懂,大家可以试试这个demo~这样一个更换头像的功能就实现了。

原文链接:http://www.apkbus.com/blog-705730-62065.html

打开App,阅读手记
0人推荐
发表评论
随时随地看视频慕课网APP