Android implements the timed photo function

Implemented on the mobile phone, after setting a period of time (timed in seconds), it will automatically take photos, which is suitable for photographers to create a scene, then set the time, and then enter the scene.

The interface is mainly an EditText that sets the time and a Button that starts the countdown. After setting the time, click the countdown button.

<FrameLayout xmlns:andro 
  android: 
  android:layout_width="fill_parent" 
  android:layout_height="fill_parent" > 
 
  <SurfaceView 
    android: 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" /> 
 
  <LinearLayout 
    android: 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="vertical" > 
 
    <Button 
      android: 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="@string/startTimer"  
      android:layout_gravity="center_horizontal"/> 
     
<!--     <TextView --> 
<!--       android: --> 
<!--       android:layout_width="fill_parent" --> 
<!--       android:layout_height="fill_parent" --> 
<!--       android:layout_gravity="center_horizontal|center_vertical|center" --> 
<!--       android:gravity="center_horizontal|center_vertical" --> 
<!--       android:text="@string/conutTime" --> 
<!--       android:textSize="40sp" /> --> 
     
    <EditText 
      android: 
      android:layout_width="fill_parent" 
      android:layout_height="fill_parent" 
      android:layout_gravity="center_horizontal|center_vertical|center" 
      android:gravity="center_horizontal|center_vertical" 
      android:text="@string/conutTime" 
      android:textSize="80sp"  
      android:inputType="number"/> 
 
     
  </LinearLayout> 
 
</FrameLayout>

Add permissions to the manifest file:

&lt;uses-permission android:name="" /&gt; 
&lt;!--The following is not required--&gt; 
&lt;uses-feature android:name="" /&gt; 
&lt;uses-feature android:name="" /&gt;

Main program:

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public class MainActivity extends Activity implements , 
    OnClickListener, PictureCallback { 
 
  private static final String CAMERA_CONTROLL = "CAMERA_CONTROLL"; 
  private SurfaceView imageSView; 
  private Button startButton; 
  // private TextView countDownTextView; 
  private EditText countDownEditTextView; 
  private Camera camera; 
  private SurfaceHolder surfaceHolder; 
  private Handler timerUpdateHandler; 
  private boolean timerRunning = false; 
  private int currentTimer = 10; 
 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    (savedInstanceState); 
    setContentView(.activity_main); 
    imageSView = (SurfaceView) findViewById(); 
    startButton = (Button) findViewById(); 
    // countDownTextView = (TextView) findViewById(); 
    countDownEditTextView = (EditText) findViewById(); 
    /* 
    (new TextWatcher() { 
 
      @Override 
      public void onTextChanged(CharSequence s, int start, int before, 
          int count) { 
        // TODO Auto-generated method stub 
      } 
 
      @Override 
      public void beforeTextChanged(CharSequence arg0, int arg1, 
          int arg2, int arg3) { 
        // TODO Auto-generated method stub 
 
      } 
 
      @Override 
      public void afterTextChanged(Editable arg0) { 
        // TODO Auto-generated method stub 
        currentTimer = (().toString()); 
      } 
    }); 
    */ 
    surfaceHolder = (); 
 
    (SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
 
    (this); 
 
    (this); 
 
    timerUpdateHandler = new Handler(); 
  } 
 
  @Override 
  public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(, menu); 
    return true; 
  } 
 
  @Override 
  public void onPictureTaken(byte[] data, Camera camera) { 
    // TODO Auto-generated method stub 
    Uri imageFileUri = getContentResolver().insert( 
        Media.EXTERNAL_CONTENT_URI, new ContentValues()); 
    try { 
      OutputStream imageFileOS = getContentResolver().openOutputStream( 
          imageFileUri); 
      (data); 
      (); 
      (); 
    } catch (Exception e) { 
      // TODO Auto-generated catch block 
      (this, (), Toast.LENGTH_LONG).show(); 
    } 
    (); 
  } 
 
  @Override 
  public void onClick(View v) { 
    // TODO Auto-generated method stub 
    currentTimer = (().toString()); 
    switch (()) { 
    case : 
      if (!timerRunning) { 
        timerRunning = true; 
        (timerUpdateTask); 
      } 
      break; 
    } 
  } 
 
  private Runnable timerUpdateTask = new Runnable() { 
 
    @Override 
    public void run() { 
      // TODO Auto-generated method stub 
      if (currentTimer > 1) { 
        currentTimer--; 
        (timerUpdateTask, 1000); 
      } else { 
        (null, null, null, ); 
        timerRunning = false; 
        currentTimer = 10; 
      } 
      (currentTimer + ""); 
    } 
  }; 
 
  @Override 
  public void surfaceChanged(SurfaceHolder holder, int format, int width, 
      int height) { 
    // TODO Auto-generated method stub 
    (); 
  } 
 
  @Override 
  public void surfaceCreated(SurfaceHolder holder) { 
    // TODO Auto-generated method stub 
    int cameraNums = (); 
    (CAMERA_CONTROLL, cameraNums + ""); 
    try { 
      camera = (cameraNums - 1); 
    } catch (Exception e) { 
      (CAMERA_CONTROLL, ()); 
    } 
    try { 
      (holder); 
       parameters = (); 
      if (().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE) { 
        ("orientation", "portrait"); 
        (90); 
        (90); 
      } 
      List<String> colorEffects = (); 
      Iterator<String> cei = (); 
      while (()) { 
        String currentEffect = (); 
        if ((.EFFECT_SOLARIZE)) { 
          parameters 
              .setColorEffect(.EFFECT_SOLARIZE); 
          break; 
        } 
      } 
      (parameters); 
    } catch (Exception e) { 
      // TODO Auto-generated catch block 
      // (); 
      (); 
    } 
  } 
 
  @Override 
  public void surfaceDestroyed(SurfaceHolder holder) { 
    // TODO Auto-generated method stub 
    (); 
    (); 
  } 
 
}

The above is all the content of this article. I hope it will be helpful to everyone's study and I hope everyone will support me more.