Android錄製視頻(四)

mainActivity如下:

package c.c;import android.app.Activity;import android.content.ContentValues;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.provider.MediaStore;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;/** * Demo描述: * 1 利用系統網路攝影機拍攝視頻 * 2 利用系統控制項播放視頻 * 3 修改視頻的中繼資料(比如:視頻title) *  * 注意: * 在MediaStore中更新中繼資料時,不會更新視頻檔案本身的 * 資料;相反它只是更新在MediaStore中關於該視頻的記錄 */public class MainActivity extends Activity {private final static int VIDEO_CAPTURE=9527;private Uri mVideoUri;    private Button mCaptureButton;    private Button mPlayButton;    private Button mSaveButton;    private EditText mEditText;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        init();    }    private void init(){    mCaptureButton=(Button) findViewById(R.id.capture_Button);    mCaptureButton.setOnClickListener(new ButtonClickListenerImpl());    mPlayButton=(Button) findViewById(R.id.play_Button);    mPlayButton.setEnabled(false);    mPlayButton.setOnClickListener(new ButtonClickListenerImpl());    mSaveButton=(Button) findViewById(R.id.save_Button);    mSaveButton.setOnClickListener(new ButtonClickListenerImpl());    mSaveButton.setEnabled(false);    mEditText=(EditText) findViewById(R.id.editText);    mEditText.setEnabled(false);    }    private class ButtonClickListenerImpl implements OnClickListener{public void onClick(View v) {if (v.getId()==R.id.capture_Button) {Intent intent=new Intent(MediaStore.ACTION_VIDEO_CAPTURE);startActivityForResult(intent, VIDEO_CAPTURE);} if (v.getId()==R.id.play_Button) {Intent intent=new Intent(Intent.ACTION_VIEW,mVideoUri);startActivity(intent);}if (v.getId()==R.id.save_Button) {ContentValues contentValues=new ContentValues(1);String title=mEditText.getText().toString();contentValues.put(MediaStore.MediaColumns.TITLE, title);int result=getContentResolver().update(mVideoUri, contentValues, null, null);if (result==1) {System.out.println("設定視頻名稱成功");} else {System.out.println("設定視頻名稱失敗");}}   }        }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {    super.onActivityResult(requestCode, resultCode, data);    if (resultCode==RESULT_OK&&requestCode==VIDEO_CAPTURE) {    mVideoUri=data.getData();    mPlayButton.setEnabled(true);    mSaveButton.setEnabled(true);    mEditText.setEnabled(true);}    }   }

main.xml如下:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <Button        android:id="@+id/capture_Button"        android:layout_width="150dip"        android:layout_height="wrap_content"        android:text="Video Capture" />    <Button        android:id="@+id/play_Button"        android:layout_width="150dip"        android:layout_height="wrap_content"        android:text="Video Play" />    <EditText         android:id="@+id/editText"        android:layout_width="150dip"        android:layout_height="wrap_content"        android:hint="video title"     />    <Button        android:id="@+id/save_Button"        android:layout_width="150dip"        android:layout_height="wrap_content"        android:text="save Button" />   </LinearLayout>