视频的录制，并且生成缩略图

最新推荐文章于 2025-05-18 12:15:15 发布

转载最新推荐文章于 2025-05-18 12:15:15 发布 · 716 阅读

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本文介绍了一个简单的Android应用程序，该程序使用系统默认的摄像头进行视频录制，并在录制完成后显示视频缩略图。通过实现Intent启动系统摄像功能，并利用ContentResolver获取录制视频的数据路径。



public class MainActivity extends Activity {
	private static final int VIDEO_CAPTURE = 0;
	private ImageView imageView;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		imageView = (ImageView) findViewById(R.id.imageView);
		Button button = (Button) findViewById(R.id.button);
		button.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
//				调用系统的录像意图
				Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
				intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
				startActivityForResult(intent, VIDEO_CAPTURE);
			}
		});
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		super.onActivityResult(requestCode, resultCode, data);
		if (resultCode == Activity.RESULT_OK && requestCode == VIDEO_CAPTURE) {
			Uri uri = data.getData();
			Cursor cursor = this.getContentResolver().query(uri, null, null,
					null, null);
			if (cursor != null && cursor.moveToNext()) {
				int id = cursor.getInt(cursor.getColumnIndex(VideoColumns._ID));
				String filePath = cursor.getString(cursor
						.getColumnIndex(VideoColumns.DATA));
				Bitmap bitmap = Thumbnails.getThumbnail(getContentResolver(),
						id, Thumbnails.MICRO_KIND, null);
				// ThumbnailUtils类2.2以上可用
				// Bitmap bitmap = ThumbnailUtils.createVideoThumbnail(filePath,
				// Thumbnails.MICRO_KIND);
				imageView.setImageBitmap(bitmap);
				cursor.close();
			}
		}
	}
}

代码链接：http://download.youkuaiyun.com/detail/kluing/7869099