android 拍照的简单实现

使用android拍照，实现起来比较简单，直接调用手机内置的摄像头。调用代码android的demo程序中已经给出。我在上面稍微做了些修改。下面我们看下具体代码。

 

源代码见：

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;

public class PhotographActivity extends Activity {
    /** Called when the activity is first created. */
    private String logTag = "Exception";
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        try {
             Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
             startActivityForResult(intent, 0);
        } catch (Exception e) {
            Log.v(logTag, e.getMessage());
        }
    }

    protected void onActivityResult(int requestCode, int resultCode, Intent data)
    {
        try {
            if (requestCode != 0) {
                return;
            }
            super.onActivityResult(requestCode, resultCode, data);

            Bundle extras = data.getExtras();
            Bitmap b = (Bitmap) extras.get("data");
            Intent intent = new Intent();

            //得到图片后，我们在另一个activity中显示
            intent.setClass(this, ShowImageActivity.class);
            intent.putExtra("image",b);
            this.startActivity(intent);
        } catch (Exception e) {
            // TODO: handle exception
            Log.v(logTag, e.getMessage());
        }
    }

}

 

新建一个显示图片的activity。这样，在这个activity中就可以对图片做其他更多的操作。

 

import android.app.Activity;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.util.Log;
import android.widget.ImageView;

public class ShowImageActivity extends Activity {

    private String logTag = "exception";

    private ImageView view;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.show);

        try {
            view = (ImageView) findViewById(R.id.view);  
            Bundle bundle = this.getIntent().getExtras();
            Bitmap b = bundle.getParcelable("image");
            view.setImageBitmap(b);
            //setContentView(view);
        } catch (Exception e) {
            Log.v(logTag, e.getMessage());
            throw new RuntimeException(e);
        }
    }
}

 

效果如下图：

拍照

显示拍照后的图片