图库和拍照功能

来源：互联网发布：vivo手机销售数据编辑：程序博客网时间：2024/05/16 08:55

转别人的，自己学习下

java代码

package com.example.test;import java.io.ByteArrayOutputStream;import java.io.File;import android.app.Activity;import android.content.Intent;import android.graphics.Bitmap;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.provider.MediaStore;import android.view.View;import android.view.View.OnClickListener;import android.view.Window;import android.widget.ImageView;import android.widget.LinearLayout;public class MainActivity extends Activity {    public final static int PHOTO_ZOOM = 0;    public final static int TAKE_PHOTO = 1;    public final static int PHOTO_RESULT = 2;    public static final String IMAGE_UNSPECIFIED = "image/*";    private String imageDir;private ImageView avatar;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.activity_main);        avatar = (ImageView) findViewById(R.id.avatar);       // 本地图库选择按钮        LinearLayout upload = (LinearLayout)findViewById(R.id.select_button);        upload.setOnClickListener(new OnClickListener() {        @Override        public void onClick(View v) {            Intent intent = new Intent(Intent.ACTION_GET_CONTENT);            intent.setType(IMAGE_UNSPECIFIED);            Intent wrapperIntent=Intent.createChooser(intent, null);            startActivityForResult(wrapperIntent, PHOTO_ZOOM);            }        });        // 拍照按钮        LinearLayout takePhoto=(LinearLayout)findViewById(R.id.photo_button);        takePhoto.setOnClickListener(new OnClickListener() {        @Override        public void onClick(View v) {                imageDir = "temp.jpg";                Intent intent= new Intent(MediaStore.ACTION_IMAGE_CAPTURE);                intent.putExtra(MediaStore.EXTRA_OUTPUT,                        Uri.fromFile(new        File(Environment.getExternalStorageDirectory(), imageDir)));                startActivityForResult(intent, TAKE_PHOTO);            }        });}        // 图片缩放        public void photoZoom(Uri uri) {            Intent intent = new Intent("com.android.camera.action.CROP");            intent.setDataAndType(uri, IMAGE_UNSPECIFIED);            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", 250);            intent.putExtra("outputY", 250);            intent.putExtra("return-data", true);            startActivityForResult(intent, PHOTO_RESULT);        }        @Override        protected void onActivityResult(int requestCode, int resultCode, Intent data) {            if (resultCode == RESULT_OK) {                if (requestCode == PHOTO_ZOOM) {                    photoZoom(data.getData());                }                if (requestCode == TAKE_PHOTO) {                    File picture = new File(Environment.getExternalStorageDirectory() + "/" + imageDir);                    photoZoom(Uri.fromFile(picture));                }                if (requestCode == PHOTO_RESULT) {                    Bundle extras = data.getExtras();                    if (extras != null) {                        Bitmap photo = extras.getParcelable("data");                            ByteArrayOutputStream stream = new ByteArrayOutputStream();                            photo.compress(Bitmap.CompressFormat.JPEG, 75, stream);                            avatar.setImageBitmap(photo);                        }                    }                }                super.onActivityResult(requestCode, resultCode, data);        }}

xml代码

<?xml version="1.0" encoding="utf-8"?><LinearLayout     xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:background="#fcf3ef"    android:gravity="center_horizontal"    android:orientation="vertical"    android:paddingTop="30dp" >    <ImageView        android:id="@+id/avatar"        android:layout_width="130dp"        android:layout_height="130dp"        android:background="@drawable/avatar_frame" />    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_marginTop="30dp"        android:gravity="center_horizontal" ><!-- 图库 -->        <LinearLayout            android:id="@+id/select_button"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:gravity="center"            android:orientation="vertical" >            <ImageView                android:layout_width="54dp"                android:layout_height="54dp"                android:background="@drawable/local" />            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_marginTop="10dp"                android:text="本地选择"                android:textColor="#000000"                android:textSize="20sp" />        </LinearLayout><!-- 拍照 -->        <LinearLayout            android:id="@+id/photo_button"            android:layout_width="126dp"            android:layout_height="match_parent"            android:layout_marginLeft="50dp"            android:gravity="center"            android:orientation="vertical" >            <ImageView                android:layout_width="57dp"                android:layout_height="53dp"                android:background="@drawable/take_photo" />            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_marginTop="10dp"                android:text="拍照"                android:textColor="#000000"                android:textSize="20sp" />        </LinearLayout>    </LinearLayout></LinearLayout>

0 0