Android运用相机照相以及对照片的裁剪

Android使用相机照相以及对照片的裁剪

示例图：

1.Activity源代码：

package com.example.crema;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;

import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

public class CramaActivity extends Activity {

private Button creama=null;

private ImageView img=null;

private TextView text=null;

private File tempFile = new File(Environment.getExternalStorageDirectory(),
getPhotoFileName());

private static final int PHOTO_REQUEST_TAKEPHOTO = 1;// 拍照
private static final int PHOTO_REQUEST_GALLERY = 2;// 从相册中选择
private static final int PHOTO_REQUEST_CUT = 3;// 结果

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_crama);
init();
Log.i("TAG-->", ""+Environment.getExternalStorageDirectory());
}

private void init() {
// TODO Auto-generated method stub

creama=(Button) findViewById(R.id.btn_creama);

img=(ImageView) findViewById(R.id.img_creama);

creama.setOnClickListener(listener);
text=(TextView) findViewById(R.id.text);

}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case PHOTO_REQUEST_TAKEPHOTO:// 当选择拍照时调用
startPhotoZoom(Uri.fromFile(tempFile));
break;
case PHOTO_REQUEST_GALLERY:// 当选择从本地获取图片时
// 做非空判断，当我们觉得不满意想重新剪裁的时候便不会报异常，下同
if (data != null)
startPhotoZoom(data.getData());
break;
case PHOTO_REQUEST_CUT:// 返回的结果
if (data != null)
// setPicToView(data);
sentPicToNext(data);
break;
}
super.onActivityResult(requestCode, resultCode, data);
}
private OnClickListener listener=new OnClickListener(){

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub

Intent cameraintent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// 指定调用相机拍照后照片的储存路径
cameraintent.putExtra(MediaStore.EXTRA_OUTPUT,
Uri.fromFile(tempFile));
startActivityForResult(cameraintent, PHOTO_REQUEST_TAKEPHOTO);

}};

@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_crama, menu);
return true;
}

private void startPhotoZoom(Uri uri) {
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(uri, "image/*");
// crop为true是设置在开启的intent中设置显示的view可以剪裁
intent.putExtra("crop", "true");

// aspectX aspectY 是宽高的比例
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);

// outputX,outputY 是剪裁图片的宽高
intent.putExtra("outputX", 300);
intent.putExtra("outputY", 300);
intent.putExtra("return-data", true);
intent.putExtra("noFaceDetection", true);
startActivityForResult(intent, PHOTO_REQUEST_CUT);
}

// 将进行剪裁后的图片传递到下一个界面上
private void sentPicToNext(Intent picdata) {
Bundle bundle = picdata.getExtras();
if (bundle != null) {
Bitmap photo = bundle.getParcelable("data");
if (photo==null) {
img.setImageResource(R.drawable.get_user_photo);
}else {
img.setImageBitmap(photo);
// 设置文本内容为图片绝对路径和名字
text.setText(tempFile.getAbsolutePath());
}

ByteArrayOutputStream baos = null;
try {
baos = new ByteArrayOutputStream();
photo.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] photodata = baos.toByteArray();
System.out.println(photodata.toString());
// Intent intent = new Intent();
// intent.setClass(RegisterActivity.this, ShowActivity.class);
// intent.putExtra("photo", photodata);
// startActivity(intent);
// finish();
} catch (Exception e) {
e.getStackTrace();
} finally {
if (baos != null) {
try {
baos.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
}

// 使用系统当前日期加以调整作为照片的名称
private String getPhotoFileName() {
Date date = new Date(System.currentTimeMillis());
SimpleDateFormat dateFormat = new SimpleDateFormat(
"'IMG'_yyyyMMdd_HHmmss");
return dateFormat.format(date) + ".jpg";
}
}

2.xml布局文件代码：

Android运用相机照相以及对照片的裁剪

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