[英]taking multiple photos with in app camera on android programming
我需要将手机的摄像头用于某个应用程序,但我是一名新程序员,因此无法在任何地方找到完整答案的站点。
这是我的主要活动:
公共类MainActivity扩展了Activity {
private Camera cameraObject;
private ShowCamera showCamera;
public static Camera isCameraAvailiable(){
Camera object = null;
try {
object = Camera.open(); // attempt to get a Camera instance
}
catch (Exception e){
// Camera is not available (in use or does not exist)
}
return object; // returns null if camera is unavailable
}
private PictureCallback capturedIt = new PictureCallback() {
@Override
public void onPictureTaken(byte[] data, Camera camera) {
Bitmap bitmap = BitmapFactory.decodeByteArray(data , 0, data .length);
if(bitmap==null){
Toast.makeText(getApplicationContext(), "not taken", Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(getApplicationContext(), "taken", Toast.LENGTH_SHORT).show();
}
cameraObject.release();
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
cameraObject = isCameraAvailiable();
showCamera = new ShowCamera(this, cameraObject);
FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview);
preview.addView(showCamera);
}
public void snapIt(View view){
cameraObject.takePicture(null, null, capturedIt);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
创建一个具有布局的片段,以接收正在使用的图像(可以是最后一个图像,一个ImageView,一个带有所有拍摄图片的GridView,w / e对您的应用程序更有意义),并带有“新图片” ”按钮。 然后,您只需将onClickListener添加到Button中,即可再次调用Camera的Activity,并将照片添加到您计划存储它们的位置。 然后在拍摄照片时调用该Fragment(在拍摄照片时在回调内)并获利!
请检查此链接http://developer.android.com/training/camera/photobasics.html它将允许打开设备的默认相机。
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