Android Camera camera Technology-android learning Journey (eight)

Brief introduction

Android SDK supports built-in cameras for Android devices. Support for multiple cameras starting from Android2.3 (primarily front-facing and rear-facing cameras). Photos and videos can be photographed.

Issues to consider

• Whether the camera is supported
• Take a quick photo or a custom photo
• Storage issues

Main APIs involved in cameras

• Intent heard the action to start the system's camera
• Camera
• Surfaceview
• Mediarecorder (VIDEO)

Permissions

"Android.permission.CAMERA"
"Android.permission.WRITE_EXTERNAL_STORAGE"
"Android.permission.RECORD.AUDIO"
Uses-feature: "Android.hardware.camera"

Photo examples

 Public  class mainactivity extends Activity {    PrivateImageView image;@Override    protected void onCreate(Bundle savedinstancestate) {Super. OnCreate (Savedinstancestate);        Setcontentview (R.layout.main);        Image = (ImageView) Findviewbyid (r.id.image); Findviewbyid (r.id.capture). Setonclicklistener (NewOnclicklistener () {@Override             Public void OnClick(View v) {//TODO auto-generated method stubIntent Intent =NewIntent (mediastore.action_image_capture); Startactivityforresult (Intent,1);    }        }); }@Override    protected void Onactivityresult(intRequestcode,intResultCode, Intent data) {if(Requestcode = =1) {if(ResultCode = = ACTIVITY.RESULT_OK) {Bitmap Camerabitmap = (Bitmap) Data.getextras (). Get ("Data");            Image.setimagebitmap (CAMERABITMAP); }        }    }}

Android Camera camera Technology-android learning Journey (eight)