Android从相机或相册获取图片裁剪

1package com.only.android.app;
2 
3import java.io.File;
4 
5import android.app.Activity;
6import android.app.AlertDialog;
7import android.content.DialogInterface;
8import android.content.Intent;
9import android.graphics.Bitmap;
10import android.graphics.BitmapFactory;
11import android.net.Uri;
12import android.os.Bundle;
13import android.os.SystemClock;
14import android.provider.MediaStore;
15import android.view.View;
16import android.widget.Button;
17import android.widget.ImageView;
18 
19import com.only.android.R;
20 
21public class CopyOfImageScaleActivity extends Activity implements View.OnClickListener {
22    /** Called when the activity is first created. */
23    private Button selectImageBtn;
24    private ImageView imageView;
25     
26    private File sdcardTempFile;
27    private AlertDialog dialog;
28    private int crop = 180;
29 
30    @Override
31    public void onCreate(Bundle savedInstanceState) {
32        super.onCreate(savedInstanceState);
33        setContentView(R.layout.imagescale);
34 
35        selectImageBtn = (Button) findViewById(R.id.selectImageBtn);
36        imageView = (ImageView) findViewById(R.id.imageView);
37 
38        selectImageBtn.setOnClickListener(this);
39        sdcardTempFile = new File("/mnt/sdcard/", "tmp_pic_" + SystemClock.currentThreadTimeMillis() + ".jpg");
40 
41    }
42 
43    @Override
44    public void onClick(View v) {
45        if (v == selectImageBtn) {
46            if (dialog == null) {
47                dialog = new AlertDialog.Builder(this).setItems(new String[] { "相机", "相册" }, new DialogInterface.OnClickListener() {
48                    @Override
49                    public void onClick(DialogInterface dialog, int which) {
50                        if (which == 0) {
51                            Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
52                            intent.putExtra("output", Uri.fromFile(sdcardTempFile));
53                            intent.putExtra("crop", "true");
54                            intent.putExtra("aspectX", 1);// 裁剪框比例
55                            intent.putExtra("aspectY", 1);
56                            intent.putExtra("outputX", crop);// 输出图片大小
57                            intent.putExtra("outputY", crop);
58                            startActivityForResult(intent, 101);
59                        } else {
60                            Intent intent = new Intent("android.intent.action.PICK");
61                            intent.setDataAndType(MediaStore.Images.Media.INTERNAL_CONTENT_URI, "image/*");
62                            intent.putExtra("output", Uri.fromFile(sdcardTempFile));
63                            intent.putExtra("crop", "true");
64                            intent.putExtra("aspectX", 1);// 裁剪框比例
65                            intent.putExtra("aspectY", 1);
66                            intent.putExtra("outputX", crop);// 输出图片大小
67                            intent.putExtra("outputY", crop);
68                            startActivityForResult(intent, 100);
69                        }
70                    }
71                }).create();
72            }
73            if (!dialog.isShowing()) {
74                dialog.show();
75            }
76        }
77    }
78 
79    @Override
80    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
81        if (resultCode == RESULT_OK) {
82            Bitmap bmp = BitmapFactory.decodeFile(sdcardTempFile.getAbsolutePath());
83            imageView.setImageBitmap(bmp);
84        }
85    }
86}