安卓头像更换，调用系统相机，或从相册修改头像

来源：互联网发布：必备淘宝营销教程编辑：程序博客网时间：2024/05/18 18:19
package com.example.changhead;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.provider.MediaStore;import android.annotation.SuppressLint;import android.app.Activity;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.drawable.BitmapDrawable;import android.graphics.drawable.Drawable;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;@SuppressLint("SdCardPath")public class MainActivity extends Activity implements OnClickListener {   private ImageView ivHead;//头像显示   private Button btnTakephoto;//拍照   private Button btnPhotos;//相册   private Bitmap head;//头像Bitmap   private static String path="/sdcard/myHead/";//sd路径   @Override   protected void onCreate(Bundle savedInstanceState) {      super.onCreate(savedInstanceState);      setContentView(R.layout.activity_main);      initView();   }   private void initView() {      //初始化控件      btnPhotos = (Button) findViewById(R.id.btn_photos);      btnTakephoto = (Button) findViewById(R.id.btn_takephoto);      btnPhotos.setOnClickListener(this);      btnTakephoto.setOnClickListener(this);      ivHead = (ImageView) findViewById(R.id.iv_head);      Bitmap bt = BitmapFactory.decodeFile(path + "head.jpg");//从Sd中找头像，转换成Bitmap      if(bt!=null){         @SuppressWarnings("deprecation")         Drawable drawable = new BitmapDrawable(bt);//转换成drawable         ivHead.setImageDrawable(drawable);      }else{         /**          * 如果SD里面没有则需要从服务器取头像，取回来的头像再保存在SD中          *           */      }                  }   @Override   public void onClick(View v) {      switch (v.getId()) {      case R.id.btn_photos://从相册里面取照片         Intent intent1 = new Intent(Intent.ACTION_PICK, null);         intent1.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");         startActivityForResult(intent1, 1);         break;      case R.id.btn_takephoto://调用相机拍照         Intent intent2 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);         intent2.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(Environment.getExternalStorageDirectory(),                     "head.jpg")));         startActivityForResult(intent2, 2);//采用ForResult打开         break;      default:         break;      }   }   protected void onActivityResult(int requestCode, int resultCode, Intent data) {      switch (requestCode) {      case 1:         if (resultCode == RESULT_OK) {            cropPhoto(data.getData());//裁剪图片         }         break;      case 2:         if (resultCode == RESULT_OK) {            File temp = new File(Environment.getExternalStorageDirectory()                  + "/head.jpg");            cropPhoto(Uri.fromFile(temp));//裁剪图片         }         break;      case 3:         if (data != null) {            Bundle extras = data.getExtras();            head = extras.getParcelable("data");            if(head!=null){               /**                * 上传服务器代码                */               setPicToView(head);//保存在SD卡中               ivHead.setImageBitmap(head);//用ImageView显示出来            }         }         break;      default:         break;      }      super.onActivityResult(requestCode, resultCode, data);   };   /**    * 调用系统的裁剪    * @param uri    */   public void cropPhoto(Uri uri) {      Intent intent = new Intent("com.android.camera.action.CROP");      intent.setDataAndType(uri, "image/*");      intent.putExtra("crop", "true");       // aspectX aspectY 是宽高的比例      intent.putExtra("aspectX", 1);      intent.putExtra("aspectY", 1);      // outputX outputY 是裁剪图片宽高      intent.putExtra("outputX", 150);      intent.putExtra("outputY", 150);      intent.putExtra("return-data", true);      startActivityForResult(intent, 3);   }   private void setPicToView(Bitmap mBitmap) {       String sdStatus = Environment.getExternalStorageState();          if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) { // 检测sd是否可用                 return;             }        FileOutputStream b = null;      File file = new File(path);      file.mkdirs();// 创建文件夹      String fileName =path + "head.jpg";//图片名字      try {         b = new FileOutputStream(fileName);         mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, b);// 把数据写入文件               } catch (FileNotFoundException e) {         e.printStackTrace();      } finally {         try {            //关闭流            b.flush();            b.close();         } catch (IOException e) {            e.printStackTrace();         }      }}}
源码下载http://download.csdn.net/detail/qq_31939617/9878316
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