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Android 使用系统相机录制视频查看视频

Android 使用系统相机录制视频查看视频

作者: 快乐小哥 | 来源:发表于2017-01-06 15:17 被阅读255次

    1.布局一个ImageView和一个Button

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    
    android:id="@+id/activity_main"    
    android:layout_width="match_parent"    
    android:layout_height="match_parent"    
    android:orientation="vertical"   
     tools:context="com.yaya.recordvideo.MainActivity">   
     <ImageView     
      android:id="@+id/iv_record_video"        
    android:layout_width="200dp"        
    android:layout_height="200dp"       
     android:src="@mipmap/ic_launcher"/>    
    <Button        
    android:layout_width="wrap_content"        
    android:layout_height="wrap_content"     
    android:id="@+id/btn_record"        
    android:text="@string/record_video"/>
    </LinearLayout>
    

    2.添加相关权限:

    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    

    3.MainActivity中代码的实现

    package com.yaya.recordvideo;
    
    import android.content.Context;
    import android.content.CursorLoader;
    import android.content.Intent;
    import android.database.Cursor;
    import android.graphics.Bitmap;
    import android.media.ThumbnailUtils;
    import android.net.Uri;
    import android.os.Bundle;
    import android.provider.MediaStore;
    import android.support.v7.app.AppCompatActivity;
    import android.view.View;
    import android.widget.Button;
    import android.widget.ImageView;
    import android.widget.Toast;
    
    import java.io.File;
    
    public class MainActivity extends AppCompatActivity {
        private ImageView iv;
        private Button btn_record;
        private final int RESULT_CODE = 1;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            iv = (ImageView) findViewById(R.id.iv_record_video);
            btn_record = (Button) findViewById(R.id.btn_record);
            btn_record.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
                    //限制时长s
                    intent.putExtra(MediaStore.EXTRA_DURATION_LIMIT, 30);
                    //限制大小
                    intent.putExtra(MediaStore.EXTRA_SIZE_LIMIT, 10*1024*1024);
                    //设置质量
                    intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
                    //设置输出位置
    //                intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.parse(Environment.getExternalStorageDirectory()+ File.separator+"gridview"+File.separator+System.currentTimeMillis()+".mp4"));
                    startActivityForResult(intent, 1);
                }
            });
            iv.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    String path = (String) iv.getTag();
                    if(path != null){
                        Intent videoFileIntent = getVideoFileIntent(new File(path));
                        startActivity(videoFileIntent);
                    }else{
                        Toast.makeText(MainActivity.this, "不能打开这个视频", Toast.LENGTH_SHORT).show();
                    }
                }
            });
        }
    
        /**
         * 利用android系统播放添加好的视频
         * @param videoFile
         * @return
         */
        public Intent getVideoFileIntent(File videoFile)
        {
            Intent intent = new Intent(Intent.ACTION_VIEW);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            intent.putExtra("oneshot", 0);
            intent.putExtra("configchange", 0);
            Uri uri = Uri.fromFile(videoFile);
            intent.setDataAndType(uri, "video/*");
            return intent;
        }
        @Override
        protected void onActivityResult(int requestCode, int resultCode, Intent data) {
            super.onActivityResult(requestCode, resultCode, data);
            if(resultCode==RESULT_OK){
                Uri uri = data.getData();
                //视频地址
                String videoPath = getPathFromUri(this,uri);
                //系统工具类ThumbnailUtils 获取视频的第一帧
                Bitmap videoThumbnail = ThumbnailUtils.createVideoThumbnail(videoPath, MediaStore.Video.Thumbnails.MICRO_KIND);
                if(videoThumbnail != null){
                    iv.setImageBitmap(videoThumbnail);
                    iv.setTag(videoPath);
                }else{
                    Toast.makeText(this, "获取缩略图失败拉!", Toast.LENGTH_SHORT).show();
                }
            }
        }
        public static String getPathFromUri(Context mContext,Uri contentUri){
    
            String[] proj = { MediaStore.Images.Media.DATA};
    
            CursorLoader loader = new CursorLoader(mContext, contentUri, proj, null, null, null);
    
            Cursor cursor = loader.loadInBackground();
    
            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
    
            cursor.moveToFirst();
            String string = cursor.getString(column_index);
            cursor.close();
            return string;
    
        }
    }
    

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