019_03camera的调用

 1 package com.example.day19_03takephotos;
 2 
 3 import java.io.File;
 4 
 5 import android.app.Activity;
 6 import android.content.Intent;
 7 import android.net.Uri;
 8 import android.os.Bundle;
 9 import android.provider.MediaStore;
10 import android.view.View;
11 
12 public class MainActivity extends Activity {
13 
14     @Override
15     protected void onCreate(Bundle savedInstanceState) {
16         super.onCreate(savedInstanceState);
17         setContentView(R.layout.activity_main);
18     }
19  
20     /**
21      *  拍照，
22      *  方法一：调用系统的camera app来拍照 
23      * 我们先要知道camera暴漏给我们的 intent ，通过该intent才可以调器camera 拍照
24      *       <intent-filter>
25                 <action android:name="android.media.action.IMAGE_CAPTURE" />
26                 <category android:name="android.intent.category.DEFAULT" />
27             </intent-filter>
28      */
29     public void takephoto(View v){
30         
31         Intent intent = new Intent();
32         intent.setAction("android.media.action.IMAGE_CAPTURE");        
33         //key point 应该是 你在调用camera进行拍照之前，就应该给他一个路径，告诉他照片保存在哪里
34         
35         Uri uri = Uri.fromFile(new File("storage/sdcard1/picture1.jpg"));
36         intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
37         startActivityForResult(intent, 100); 
38         
39     }
40     
41     /**
42      * @param v
43      * 
44      *    <intent-filter>
45                 <action android:name="android.media.action.VIDEO_CAPTURE" />
46                 <category android:name="android.intent.category.DEFAULT" />
47             </intent-filter>
48      */
49     public void takevideo(View v){
50         Intent intent = new Intent();
51         intent.setAction("android.media.action.VIDEO_CAPTURE");
52         
53         Uri uri = Uri.fromFile(new File("storage/sdcard1/video.mp4"));
54         intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
55         startActivityForResult(intent, 200); 
56     }
57     
58     @Override
59     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
60         // TODO Auto-generated method stub
61         super.onActivityResult(requestCode, resultCode, data);
62         
63         if (requestCode==100&&resultCode==RESULT_OK) {
64             System.out.println("MainActivity.onActivityResult()" +"拍照完成，请去处理");
65         }
66         else if (requestCode==200&&resultCode==RESULT_OK) {
67             System.out.println("MainActivity.onActivityResult()" +"录像完成，请去处理");
68         }
69     }
70 }

 1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:paddingBottom="@dimen/activity_vertical_margin"
 6     android:paddingLeft="@dimen/activity_horizontal_margin"
 7     android:paddingRight="@dimen/activity_horizontal_margin"
 8     android:paddingTop="@dimen/activity_vertical_margin"
 9     tools:context="com.example.day19_03takephotos.MainActivity" 
10     android:orientation="vertical">
11 
12     <TextView
13         android:layout_width="wrap_content"
14         android:layout_height="wrap_content"
15         android:text="拍照小应用" />
16      <Button
17         android:layout_width="wrap_content"
18         android:layout_height="wrap_content"
19         android:onClick="takephoto"
20         android:text="拍照" />
21          <Button
22         android:layout_width="wrap_content"
23         android:layout_height="wrap_content"
24         android:onClick="takevideo"
25         android:text="录像" />
26 
27 </LinearLayout>