如何捕获视频或音频并仅在Android上显示？ [英] How do I capture video or audio and display only on android ?

问题描述

我已经成功创建了用于捕获图像并在屏幕上显示图像，但请同样的方式来附加音频和放大器。视频也是如此，如何从按钮上的Gallery中选择附加媒体文件。



我尝试过：

I have successfully created for just capturing the Image and Displaying the Image on the Screen, But Please me the same way for Attaching Audio & Video too, And how do I get option of Attaching media file from Gallery onClick of Buttons.

What I have tried:

package inducesmile.com.androidcameraapplication;

import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.VideoView;


public class MainActivity extends ActionBarActivity {

    private ImageView imageHolder;
    private VideoView videoHolder;
    private final int requestCode = 20;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        imageHolder = (ImageView)findViewById(R.id.captured_photo);
        Button capturedImageButton = (Button)findViewById(R.id.photo_button);
        Button capturedVideoButton = (Button)findViewById(R.id.Video_button);
        Button capturedAudioButton = (Button)findViewById(R.id.Audio_button);
        capturedImageButton.setOnClickListener( new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent photoCaptureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                startActivityForResult(photoCaptureIntent, requestCode);
            }
        });

        capturedVideoButton.setOnClickListener( new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent  videoCaptureIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
                startActivityForResult(videoCaptureIntent, requestCode);
            }
        });

        capturedAudioButton.setOnClickListener( new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent audioCaptureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE_SECURE);
                startActivityForResult(audioCaptureIntent, requestCode);
            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(this.requestCode == requestCode && resultCode == RESULT_OK){
            Bitmap bitmap = (Bitmap)data.getExtras().get("data");
            imageHolder.setImageBitmap(bitmap);
        }
    }



    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

推荐答案

我建​​议为每个<$ c的调用使用单独的请求代码$ C> startActivityForResult（）。否则，在 onActivityResult（）中无法区分它们。



例如，如果你是想要在 VideoView 对象中显示捕获的视频的第一帧，只需调用其 seekTo（0）方法。



另一个想法是给它分配一个缩略图，例如：

I would suggest using separate request codes for each of the calls to startActivityForResult(). Otherwise, there's no way to distinguish between them in onActivityResult().

If, for example, you are wanting to show the first frame of the captured video in the VideoView object, just call its seekTo(0) method.

Another idea would be to assign a thumbnail to it, something like:

Bitmap bmThumb = ThumbnailUtils.createVideoThumbnail("path", MediaStore.Images.Thumbnails.MINI_KIND);
BitmapDrawable bmDrawable = new BitmapDrawable(bmThumb);
videoHolder.setBackgroundDrawable(bmDrawable);

就音频而言，没有什么可以显示的。因此，即使您使用Voice Recorder应用程序捕获了某些内容，它也只是音频 - 没有图像。

As far as audio goes, there's nothing to display. So even if you captured something using the Voice Recorder app, it's just audio -- no image(s).

这篇关于如何捕获视频或音频并仅在Android上显示？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！