使用ContentResolver将图片保存到手机的多媒体数据中

效果：

核心代码

package com.javen.devicemange.CrazyOne.content;import android.Manifest;import android.content.ContentValues;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.net.Uri;import android.os.Bundle;import android.PRovider.MediaStore;import android.support.annotation.Nullable;import android.support.v4.app.ActivityCompat;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.ImageView;import com.javen.devicemange.R;import java.io.OutputStream;/** * Created by Administrator on 2017/2/16 0016. * 使用将图片ContentResolver保存到手机的多媒体数据中 * <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> * <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> */public class AddPhotoToAlbum extends AppCompatActivity implements View.OnClickListener {    private ImageView imageView10;    private Button add;    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.addphototoalbum);        initView();        Log.d("GsonUtils", "onCreate=");        //需要申请读取和修改外置存储的权限        requestPermission();    }    private void initView() {        imageView10 = (ImageView) findViewById(R.id.imageView10);        add = (Button) findViewById(R.id.add);        add.setOnClickListener(this);    }    private void requestPermission() {        String[] permissions = {                Manifest.permission.WRITE_EXTERNAL_STORAGE,                Manifest.permission.READ_EXTERNAL_STORAGE,        };        ActivityCompat.requestPermissions(this, permissions, 1);    }    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.add:                AddPictureToAlbum();                break;        }    }    private void AddPictureToAlbum() {        Log.d("GsonUtils", "AddPictureToAlbum=");        //创建ContentValues对象，准备插入数据        ContentValues contentValues = new ContentValues();        contentValues.put(MediaStore.Images.Media.DISPLAY_NAME, "shuangta");        contentValues.put(MediaStore.Images.Media.DESCRipTION, "双塔");        contentValues.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");        //插入数据，返回所插入数据对应的Uri        Uri uri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues);        //加载应用程序res下的图片bitmap        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.shuangta);        OutputStream outputStream = null;        try {            //获取刚插入的数据的Uri对应的输出流            outputStream = getContentResolver().openOutputStream(uri);            //将bitmap图片保存到Uri对应的数据节点中            bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream);            //图片会保存到sd卡的pcitures目录下1487231905572.jpg            outputStream.close();            Log.d("GsonUtils", "outputStream=");        } catch (Exception e) {            e.printStackTrace();            Log.d("GsonUtils", "Exception=" + e.toString());        }    }}
布局xml
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"              xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent"              android:layout_height="match_parent"              android:orientation="vertical">    <ImageView        android:id="@+id/imageView10"        android:layout_width="match_parent"        android:layout_height="300dp"        android:background="@drawable/shuangta"/>    <Button        android:id="@+id/add"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="添加并保存res资源目录下的图片到安卓手机中"/></LinearLayout>。。。