手机拍照功能

来源：互联网发布：js中的事件监听怎么写编辑：程序博客网时间：2024/04/28 18:53

xml

<LinearLayout     xmlns:tools="http://schemas.android.com/tools"      android:layout_width="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_height="fill_parent"    android:orientation="vertical"    ><Button     android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="takePhoto"    android:id="@+id/take_photo"/><Button     android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="choicePhoto"    android:id="@+id/choice_photo"/><ImageView     android:layout_width="match_parent"    android:layout_height="600dp"    android:id="@+id/my_photo"/></LinearLayout>

MainActivity.java

package com.example.testsometing;import java.io.File;import java.io.FileNotFoundException;import java.io.IOException;import javax.xml.transform.OutputKeys;import junit.framework.Protectable;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.provider.MediaStore;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;public class MainActivity extends BaseActivity {    Button btn_takePhoto;    Button btn_choicephone;    ImageView img_photo;    Uri imageUri;    File outputFile;    static final int TAKE_PHOTO = 1;    static final int CROP_PHOTO = 2;    static final int CHOICE_PHONE = 3;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        btn_takePhoto = (Button) this.findViewById(R.id.take_photo);        img_photo = (ImageView) this.findViewById(R.id.my_photo);        btn_takePhoto.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View arg0) {                outputFile = new File("/storage/emulated/0/DCIM/Camera","imgxPhoto.jpg");                if(outputFile.exists()){                    outputFile.delete();                }else{                    //不做处理                  }                try {                    outputFile.createNewFile();                } catch (IOException e) {                    e.printStackTrace();                }                imageUri = Uri.fromFile(outputFile);                Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");                intent.putExtra(MediaStore.EXTRA_OUTPUT,imageUri);                //将所拍图片的路径设置为imagerUri，如果不做设置则为相机拍照的默认路径                //设置路径后“照片”是看不到所拍的图片，要进入“文件”才能看到所拍的照片                startActivityForResult(intent, TAKE_PHOTO);                   }        });        btn_choicephone = (Button) this.findViewById(R.id.choice_photo);        btn_choicephone.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View arg0) {                File file = new File("/storage/emulated/0/DCIM/Camera","myphotoy.jpg");                if(file.exists()){                    file.delete();                }                else{                    //不做处理                }                try {                    file.createNewFile();                } catch (IOException e) {                    e.printStackTrace();                }                imageUri = Uri.fromFile(file);                Intent intent = new Intent("android.intent.action.GET_CONTENT");                intent.setType("image/*");                //不设置Type会报错                intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);/*              intent.putExtra("scale", true);//规模，要不要都一样，暂时看不出区别*/              intent.putExtra("crop",true);//可以剪切                startActivityForResult(intent, CHOICE_PHONE);            }        });    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        switch (requestCode) {        case TAKE_PHOTO:            if(resultCode == RESULT_OK){            Intent intent = new Intent("com.android.camera.action.CROP");            intent.setDataAndType(imageUri,"image");            /*intent.putExtra("scale",true);*/            intent.putExtra(MediaStore.EXTRA_OUTPUT,imageUri);            startActivityForResult(intent, CROP_PHOTO);            }            break;        case CROP_PHOTO:            if(resultCode == RESULT_OK){                try {                    Bitmap bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(imageUri));                    //如果对所拍的照片不做剪切处理则bitmap不能得到目标，因为所拍图片太大                    img_photo.setImageBitmap(bitmap);                } catch (FileNotFoundException e) {                    e.printStackTrace();                }            }            break;        case CHOICE_PHONE:            if(resultCode == RESULT_OK){                Bitmap bitmap;                try {                    bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(imageUri));                    //如果对所拍的照片不做剪切处理则bitmap不能得到目标，因为所拍图片太大                    img_photo.setImageBitmap(bitmap);                } catch (FileNotFoundException e) {                    e.printStackTrace();                }            }            break;        default:            break;        }    }}

效果
这里写图片描述

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