Androidx学习笔记（80）--- 摄像拍照

最新推荐文章于 2025-07-01 20:29:53 发布

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本文介绍如何使用Android系统提供的API来实现拍照和摄像功能。通过Intent启动系统预设的拍照和摄像Activity，并设置图片和视频的保存路径及质量。文中提供了具体的代码示例。

摄像头

启动系统提供的拍照程序

//隐式启动系统提供的拍照Activity
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//设置照片的保存路径
File file = new File(Environment.getExternalStorageDirectory(), "haha.jpg"); 
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file)); 
startActivityForResult(intent, 0);

启动系统提供的摄像程序

Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);

File file = new File(Environment.getExternalStorageDirectory(), "haha.3gp"); 
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file)); 
//设置保存视频文件的质量
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
startActivityForResult(intent, 0);

public class MainActivity extends Activity {
 
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
	}
 
	public void image(View v){
		//启动系统提供的拍照activity
		Intent intent = new Intent();
		intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
		intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(Environment.getExternalStorageDirectory(), "haha.jpg")));
		startActivityForResult(intent, 10);
	}
	
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		// TODO Auto-generated method stub
		super.onActivityResult(requestCode, resultCode, data);
		if(requestCode == 10){
			Toast.makeText(this, "拍照成功", 0).show();
		}
		else if(requestCode == 20){
			Toast.makeText(this, "摄像成功", 0).show();
		}
	}
	
	public void video(View v){
		//启动系统提供的摄像activity
		Intent intent = new Intent();
		intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
		intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(Environment.getExternalStorageDirectory(), "haha.3gp")));
		intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
		startActivityForResult(intent, 20);
	}
 
}