我有这个代码，当我点击snapit按钮来修正照片时，他们向我显示错误“java.lang.RuntimeException：takePicture failed”。 我尝试在有线电视月之前使用的代码
vpublic class TackPhoto extends AppCompatActivity {
// SurfaceView cameraView;
customSurfaceView surfaceView;
// SurfaceHolder surfaceHolder;
Camera camera;
Button flipCamera;
Button snapPhoto ;
int cameraID = 0;
private Camera.PictureCallback capturedIt = new Camera.PictureCallback(){
@Override
public void onPictureTaken(byte[] data, Camera camera) {
Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
if (bitmap == null){
Toast.makeText(getApplicationContext(), "not taken", Toast.LENGTH_SHORT).show();
}else {
.
.
.
.
Toast.makeText(getApplicationContext(), "taken",Toast.LENGTH_SHORT).show();
}
camera.release();
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tack_photo);
try {
camera = Camera.open(cameraID);
}
catch (Exception e){
}
surfaceView = new customSurfaceView(this,camera);
FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview);
preview.addView(surfaceView);
snapPhoto = (Button)findViewById(R.id.snapPhoto);
snapPhoto.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
camera.takePicture(null,null,capturedIt);
}
});
}
}这是前面的课程
public class customSurfaceView extends SurfaceView implements SurfaceHolder.Callback, Camera.PreviewCallback {
private Camera camera;
//private SurfaceHolder surfaceHolder;
private SurfaceHolder surfaceHolder;
private Context context;
boolean previewing = false;
@Override
public void surfaceCreated(SurfaceHolder holder) {
try
{
camera = Camera.open(cameraID);
camera.setPreviewDisplay(holder);
}
catch (IOException exception)
{
camera.release();
}
camera.startPreview();
previewing = true;
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
if(previewing){
camera.stopPreview();
previewing = false;
}
if (camera != null){
try {
camera.setPreviewDisplay(holder);
Display display = ((WindowManager)getApplicationContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
if(display.getRotation() == Surface.ROTATION_0)
{
camera.setDisplayOrientation(90);
}
if(display.getRotation() == Surface.ROTATION_270)
{
camera.setDisplayOrientation(180);
}
camera.startPreview();
previewing = true;
} catch (IOException e) {
e.printStackTrace();
}
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
camera.stopPreview();
if (camera != null)
camera.release();
camera=null;
}
public void flipit(){
camera.stopPreview();
camera.release();
if (cameraID == 0){
camera = Camera.open(1);
cameraID = 1;
}else {
camera = Camera.open(0);
cameraID = 0;
}
try
{
camera.setPreviewDisplay(surfaceHolder);
camera.setPreviewCallback(this);
if (camera != null){
try {
camera.setPreviewDisplay(surfaceHolder);
Display display = ((WindowManager)getApplicationContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
if(display.getRotation() == Surface.ROTATION_0)
{
camera.setDisplayOrientation(90);
}
if(display.getRotation() == Surface.ROTATION_270)
{
camera.setDisplayOrientation(180);
}
//camera.startPreview();
camera.startPreview();
previewing = true;
} catch (IOException e) {
e.printStackTrace();
}
}
}
catch (IOException exception)
{
camera.release();
}
}
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
}
}
logcat输出
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.abcd.abcd.abcd.abcd, PID: 12272
Theme: themes:{}
java.lang.RuntimeException: takePicture failed
at android.hardware.Camera.native_takePicture(Native Method)
at android.hardware.Camera.takePicture(Camera.java:1492)
at android.hardware.Camera.takePicture(Camera.java:1436)
at com.example.abcd.abcd.abcd.abcd.TackPhoto$3.onClick(TackPhoto.java:170)
at android.view.View.performClick(View.java:5204)
at android.view.View$PerformClick.run(View.java:21158)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5461)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)