Photo&Vedio的拍攝

http://developer.android.com/training/camera/photobasics.html

一、Vedio

1、首先要聲明權限

<manifest ... >
    <uses-featureandroid:name="android.hardware.camera"
                  android:required="true"/>
    ...
</manifest>

2、調用Vedio

staticfinalint REQUEST_VIDEO_CAPTURE =1;

privatevoid dispatchTakeVideoIntent(){
    Intent takeVideoIntent =newIntent(MediaStore.ACTION_VIDEO_CAPTURE);
    if(takeVideoIntent.resolveActivity(getPackageManager())!=null){
        startActivityForResult(takeVideoIntent, REQUEST_VIDEO_CAPTURE);
    }
}

3、在onActivityResult中獲取到錄像地址

protectedvoid onActivityResult(int requestCode,int resultCode,Intent data){
    if(requestCode == REQUEST_VIDEO_CAPTURE && resultCode == RESULT_OK){
        Uri videoUri = intent.getData();
        mVideoView.setVideoURI(videoUri);
    }
}

二、Photo

1、首先聲明權限

<manifest ... >
    <uses-featureandroid:name="android.hardware.camera"
                  android:required="true"/>
    ...
</manifest>

2、拍攝照片

staticfinalint REQUEST_IMAGE_CAPTURE =1;

privatevoid dispatchTakePictureIntent(){
    Intent takePictureIntent =newIntent(MediaStore.ACTION_IMAGE_CAPTURE);
    if(takePictureIntent.resolveActivity(getPackageManager())!=null){
        startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
    }
}

3、獲取縮略圖（通過返回的Data字段）

@Override
protectedvoid onActivityResult(int requestCode,int resultCode,Intent data){
    if(requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK){
        Bundle extras = data.getExtras();
        Bitmap imageBitmap =(Bitmap) extras.get("data");
        mImageView.setImageBitmap(imageBitmap);
    }
}

三、如何制定文件位置

1、如要包文件存儲在公共目錄可以通過：

Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);

如要把文件存儲在私有目錄可以通過

getExternalFilesDir()

2、在startActivity是添加參數

 takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
                    Uri.fromFile(photoFile));

四、添加文件到系統數據庫Gallery

Intent mediaScanIntent =newIntent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
    File f =newFile(mCurrentPhotoPath);
    Uri contentUri =Uri.fromFile(f);
    mediaScanIntent.setData(contentUri);
    this.sendBroadcast(mediaScanIntent);