Android控制摄像头拍照并对照片进行裁剪
发布时间:2020-12-15 00:22:27 所属栏目:Java 来源:网络整理
导读:今天PHP站长网 52php.cn把收集自互联网的代码分享给大家,仅供参考。 package cn.testcamera;import java.io.File;import java.text.SimpleDateFormat;import java.util.Date;import android.app.Activity;import android
以下代码由PHP站长网 52php.cn收集自互联网 现在PHP站长网小编把它分享给大家,仅供参考 package cn.testcamera; import java.io.File; import java.text.SimpleDateFormat; import java.util.Date; import android.app.Activity; import android.content.ContentResolver; import android.content.ContentUris; import android.content.Intent; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.net.Uri; import android.os.Bundle; import android.provider.MediaStore; import android.view.View; import android.widget.Button; import android.widget.ImageView; public class MainActivity extends Activity { private Button mButton; private ImageView mImageView; private File mPhotoFile; private String mPhotoPath; private Uri mPhotoOnSDCardUri; public final static int CAMERA_RESULT=777; public final static int CAMERA_RESULT_CUT=888; public final static int CAMERA_RESULT_CUT_OVER=999; public final static String TAG="xx"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mButton = (Button) findViewById(R.id.button); mButton.setOnClickListener(new ButtonOnClickListener()); mImageView = (ImageView) findViewById(R.id.imageView); } private class ButtonOnClickListener implements View.OnClickListener { public void onClick(View v) { try { Intent intent = new Intent("android.media.action.IMAGE_CAPTURE"); mPhotoPath="mnt/sdcard/DCIM/Camera/"+getPhotoFileName(); mPhotoFile = new File(mPhotoPath); if (!mPhotoFile.exists()) { mPhotoFile.createNewFile(); } mPhotoOnSDCardUri=Uri.fromFile(mPhotoFile); intent.putExtra(MediaStore.EXTRA_OUTPUT,mPhotoOnSDCardUri); //拍照后显示此图片 //startActivityForResult(intent,CAMERA_RESULT); //拍照后先修改再显示此图片 startActivityForResult(intent,CAMERA_RESULT_CUT); } catch (Exception e) { } } } @Override protected void onActivityResult(int requestCode,int resultCode,Intent data) { super.onActivityResult(requestCode,resultCode,data); //1 拍照后显示照片 if (requestCode==CAMERA_RESULT) { Bitmap bitmap = BitmapFactory.decodeFile(mPhotoPath,null); mImageView.setImageBitmap(bitmap); } //2 拍照后剪切照片,然后显示 //2.1拍照且剪裁 if (requestCode == CAMERA_RESULT_CUT) { Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,mPhotoOnSDCardUri); sendBroadcast(intent); try { Thread.sleep(2000); } catch (InterruptedException e) { e.printStackTrace(); } Uri systemImageUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI; ContentResolver contentResolver = getContentResolver(); Cursor cursor = contentResolver.query(systemImageUri,null,MediaStore.Images.Media.DISPLAY_NAME + "='" + mPhotoFile.getName() + "'",null); Uri photoUriInMedia = null; if (cursor != null && cursor.getCount() > 0) { cursor.moveToLast(); long id = cursor.getLong(0); photoUriInMedia = ContentUris.withAppendedId(systemImageUri,id); } cursor.close(); Intent in = new Intent("com.android.camera.action.CROP"); //需要裁减的图片格式 in.setDataAndType(photoUriInMedia,"image/*"); //允许裁减 in.putExtra("crop","true"); //剪裁后ImageView显时图片的宽 in.putExtra("outputX",250); //剪裁后ImageView显时图片的高 in.putExtra("outputY",250); //设置剪裁框的宽高比例 in.putExtra("aspectX",1); in.putExtra("aspectY",1); in.putExtra("return-data",true); startActivityForResult(in,CAMERA_RESULT_CUT_OVER); } //2.2显示 if (requestCode==CAMERA_RESULT_CUT_OVER) { //剪切图片的时候,若"放弃"则回答的data为null if (data!=null) { Bitmap bitmap = (Bitmap) data.getExtras().get("data"); mImageView.setImageBitmap(bitmap); } } } private String getPhotoFileName() { Date date = new Date(System.currentTimeMillis()); SimpleDateFormat dateFormat = new SimpleDateFormat("'IMG'_yyyyMMdd_HHmmss"); return dateFormat.format(date) + ".jpg"; } } main.xml <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" > <Button android:id="@+id/button" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="点击按钮拍照" /> <ImageView android:id="@+id/imageView" android:layout_below="@id/button" android:layout_width="fill_parent" android:layout_height="wrap_content" /> </RelativeLayout> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="cn.testcamera" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="10" /> <uses-permission android:name="android.permission.CAMERA"/> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" android:launchMode="singleTask" android:label="@string/title_activity_main" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest> 以上内容由PHP站长网【52php.cn】收集整理供大家参考研究 如果以上内容对您有帮助,欢迎收藏、点赞、推荐、分享。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |
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