嗨我有與HTC M8自動對焦相同的問題。我的代碼在HTC m7和其他設備上正常工作。
我修改了代碼如下
import android.hardware.Camera;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.hardware.Camera.AutoFocusCallback;
import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.Window;
import android.view.WindowManager;
public class Main extends Activity implements SurfaceHolder.Callback, SensorEventListener, AutoFocusCallback {
Camera mCamera;
SurfaceView mPreview;
Sensor mAccelerometer;
SensorManager mSensorManager;
float motionX = 0;
float motionY = 0;
float motionZ = 0;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN
| WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
setContentView(R.layout.main);
mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
mPreview = (SurfaceView)findViewById(R.id.preview);
mPreview.getHolder().addCallback(this);
mPreview.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
public void onResume() {
Log.d("System","onResume");
super.onResume();
mCamera = Camera.open();
mSensorManager.registerListener(this, mAccelerometer
, SensorManager.SENSOR_DELAY_NORMAL);
}
public void onPause() {
Log.d("System","onPause");
super.onPause();
mCamera.release();
mSensorManager.unregisterListener(this, mAccelerometer);
}
public void onAccuracyChanged(Sensor arg0, int arg1) { }
public void onSensorChanged(SensorEvent event) {
if(Math.abs(event.values[0] - motionX) > 0.2
|| Math.abs(event.values[1] - motionY) > 0.2
|| Math.abs(event.values[2] - motionZ) > 0.2) {
Log.d("Camera System", "Refocus");
try {
mCamera.autoFocus(this);
} catch (RuntimeException e) { }
}
motionX = event.values[0];
motionY = event.values[1];
motionZ = event.values[2];
}
public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
Log.d("CameraSystem","surfaceChanged");
Camera.Parameters params = mCamera.getParameters();
List<Camera.Size> previewSize = params.getSupportedPreviewSizes();
List<Camera.Size> pictureSize = params.getSupportedPictureSizes();
params.setPictureSize(pictureSize.get(0).width, pictureSize.get(0).height);
params.setPreviewSize(previewSize.get(0).width, previewSize.get(0).height);
params.setJpegQuality(100);
mCamera.setParameters(params);
try {
mCamera.setPreviewDisplay(mPreview.getHolder());
mCamera.startPreview();
} catch (Exception e) {
e.printStackTrace();
}
}
public void surfaceCreated(SurfaceHolder arg0) { }
public void surfaceDestroyed(SurfaceHolder arg0) { }
public void onAutoFocus(boolean success, Camera camera) {
Log.d("CameraSystem","onAutoFocus");
}
}
和XML如下所示:
<RelativeLayout 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" >
<SurfaceView
android:id="@+id/preview"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</RelativeLayout>
希望這有助於你