android调用系统相机拍照并保存在本地

古城微笑少年丶 2022-08-27 03:53 210阅读 0赞

import java.io.File;
    import java.io.FileNotFoundException;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.util.Calendar;
    import java.util.Locale;
    import android.annotation.SuppressLint;
    import android.app.Activity;
    import android.content.Intent;
    import android.graphics.Bitmap;
    import android.os.Bundle;
    import android.os.Environment;
    import android.provider.MediaStore;
    import android.text.format.DateFormat;
    import android.util.Log;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.ImageView;
    import android.widget.Toast;
    
    @SuppressLint("SdCardPath")
    public class MainActivity extends Activity {
    	/** Called when the activity is first created. */
    	private Button button;
    	private ImageView view;
    
    	@Override
    	public void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.activity_main);
    		button = (Button) findViewById(R.id.button1);
    		view= (ImageView)findViewById(R.id.imageView1);
    		button.setOnClickListener(new OnClickListener() {
    
    			@Override
    			public void onClick(View v) {
    				// TODO Auto-generated method stub
    				Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    				startActivityForResult(intent, 1);
    			}
    		});
    	}
    
    	@SuppressLint("SdCardPath")
    	@Override
    	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    		// TODO Auto-generated method stub
    		super.onActivityResult(requestCode, resultCode, data);
    		if (resultCode == Activity.RESULT_OK) {
    			String sdStatus = Environment.getExternalStorageState();
    			if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) { // 检测sd是否可用
    				Log.i("TestFile",
    						"SD card is not avaiable/writeable right now.");
    				return;
    			}
    			new DateFormat();
    			String name = DateFormat.format("yyyyMMdd_hhmmss",Calendar.getInstance(Locale.CHINA)) + ".jpg";	
    			Toast.makeText(this, name, Toast.LENGTH_LONG).show();
    			Bundle bundle = data.getExtras();
    			Bitmap bitmap = (Bitmap) bundle.get("data");// 获取相机返回的数据，并转换为Bitmap图片格式
    		
    			FileOutputStream b = null;		   
    			File file = new File("/sdcard/Image/");
    			file.mkdirs();// 创建文件夹
    			String fileName = "/sdcard/Image/"+name;
    
    			try {
    				b = new FileOutputStream(fileName);
    				bitmap.compress(Bitmap.CompressFormat.JPEG, 100, b);// 把数据写入文件
    			} catch (FileNotFoundException e) {
    				e.printStackTrace();
    			} finally {
    				try {
    					b.flush();
    					b.close();
    				} catch (IOException e) {
    					e.printStackTrace();
    				}
    			}
    			try
    			{
    				view.setImageBitmap(bitmap);// 将图片显示在ImageView里
    			}catch(Exception e)
    			{
    				Log.e("error", e.getMessage());
    			}
    			
    		}
    	}
    }

xml文件

最后要记得加权限

<uses-permission android:name="android.permission.MOUNT\_UNMOUNT\_FILESYSTEMS"/>  
  
<uses-permission android:name="android.permission.WRITE\_EXTERNAL\_STORAGE"/>  
 <uses-feature android:name = "android.hardware.camera" />  
<uses-feature android:name = "android.hardware.camera.autofocus" />

**[源代码下载][Link 1]**

[Link 1]: http://download.csdn.net/download/abc5382334/7302675