我有一个问题，我似乎无法修复。这是错误：
01-30 15:56:48.350 891-891/com.example.hummus.onething E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.hummus.onething, PID: 891
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.hummus.onething/com.example.hummus.onething.MainActivity}: java.lang.UnsupportedOperationException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2184)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.UnsupportedOperationException
at com.google.android.gms.common.api.GoogleApiClient.getContext(Unknown Source)
at com.google.android.gms.internal.zzju.zza(Unknown Source)
at com.google.android.gms.internal.zzju.start(Unknown Source)
at com.example.hummus.onething.MainActivity.onStart(MainActivity.java:465)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1171)
at android.app.Activity.performStart(Activity.java:5241)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2157)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
它假设是Android相机的应用程序，用于确定手机与相机之间的距离。这是我的活动课
package com.example.hummus.onething;
import java.io.FileDescriptor;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.ContentValues;
import android.content.Context;
import android.content.pm.ActivityInfo;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.hardware.Camera.AutoFocusCallback;
import android.hardware.Camera.Face;
import android.hardware.Camera.FaceDetectionListener;
import android.hardware.Camera.Parameters;
import android.hardware.Camera.PictureCallback;
import android.hardware.Camera.ShutterCallback;
import android.net.Uri;
import android.nfc.Tag;
import android.os.Bundle;
import android.provider.MediaStore.Images.Media;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.google.android.gms.appindexing.Action;
import com.google.android.gms.appindexing.AppIndex;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.Api;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.PendingResult;
import com.google.android.gms.common.api.Status;
import static android.util.Log.*;
public class MainActivity extends Activity implements SurfaceHolder.Callback
{
static Camera camera;
Button snap;
SurfaceView surface;
SurfaceHolder surfaceHolder;
boolean previewing = false;
LayoutInflater controlInflater;
static TextView info;
View drawingView;
static Face[] detectedFaces;
private ScheduledExecutorService myScheduledExecutorService;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client = new GoogleApiClient() {
@Override
public boolean hasConnectedApi(Api<?> api) {
return false;
}
@Override
public ConnectionResult getConnectionResult(Api<?> api) {
return null;
}
@Override
public void connect() {
}
@Override
public ConnectionResult blockingConnect() {
return null;
}
@Override
public ConnectionResult blockingConnect(long l, TimeUnit timeUnit) {
return null;
}
@Override
public void disconnect() {
}
@Override
public void reconnect() {
}
@Override
public PendingResult<Status> clearDefaultAccountAndReconnect() {
return null;
}
@Override
public void stopAutoManage(FragmentActivity fragmentActivity) {
}
@Override
public boolean isConnected() {
return false;
}
@Override
public boolean isConnecting() {
return false;
}
@Override
public void registerConnectionCallbacks(ConnectionCallbacks connectionCallbacks) {
}
@Override
public boolean isConnectionCallbacksRegistered(ConnectionCallbacks connectionCallbacks) {
return false;
}
@Override
public void unregisterConnectionCallbacks(ConnectionCallbacks connectionCallbacks) {
}
@Override
public void registerConnectionFailedListener(OnConnectionFailedListener onConnectionFailedListener) {
}
@Override
public boolean isConnectionFailedListenerRegistered(OnConnectionFailedListener onConnectionFailedListener) {
return false;
}
@Override
public void unregisterConnectionFailedListener(OnConnectionFailedListener onConnectionFailedListener) {
}
@Override
public void dump(String s, FileDescriptor fileDescriptor, PrintWriter printWriter, String[] strings) {
}
};
@Override
protected void onCreate(Bundle savedInstanceState)
{
Log.d("DEBUG", "Import Done");
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
surface = (SurfaceView) findViewById(R.id.surfaceView);
surfaceHolder = surface.getHolder();
surfaceHolder.addCallback(this);
drawingView = new View(this);
LayoutParams layoutParamsDrawing
= new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT);
this.addContentView(drawingView, layoutParamsDrawing);
controlInflater = LayoutInflater.from(getBaseContext());
View viewControl = controlInflater.inflate(R.layout.activity_main, null);
LayoutParams layoutParamsControl
= new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT);
this.addContentView(viewControl, layoutParamsControl);
snap = (Button) findViewById(R.id.button);
snap.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
}
});
Log.d("DEBUG", "CHECKPOINT 1");
LinearLayout layoutBackground = (LinearLayout) findViewById(R.id.background);
layoutBackground.setOnClickListener(new LinearLayout.OnClickListener()
{
AutoFocusCallback myAutoFocusCallback = new AutoFocusCallback()
{
@Override
public void onAutoFocus(boolean arg0, Camera arg1)
{
// TODO Auto-generated method stub
if (arg0)
{
snap.setEnabled(true);
camera.cancelAutoFocus();
}
float focusDistances[] = new float[3];
arg1.getParameters().getFocusDistances(focusDistances);
info.setText("Optimal Focus Distance(meters): "
+ focusDistances[Parameters.FOCUS_DISTANCE_OPTIMAL_INDEX]);
}
};
@Override
public void onClick(View arg0)
{
// TODO Auto-generated method stub
snap.setEnabled(false);
camera.autoFocus(myAutoFocusCallback);
}
});
info = (TextView) findViewById(R.id.textView);
Log.d("DEBUG","CHECKPOINT 2");
Log.d("DEBUG","WHERE PROGRAM STOPS");
}
private static class DrawingView extends View {
static boolean haveFace;
Paint drawingPaint;
public DrawingView(Context context) {
super(context);
haveFace = false;
drawingPaint = new Paint();
drawingPaint.setColor(Color.GREEN);
drawingPaint.setStyle(Paint.Style.STROKE);
drawingPaint.setStrokeWidth(2);
}
public static void setHaveFace(boolean h)
{
haveFace = h;
}
@Override
protected void onDraw(Canvas canvas) {
// TODO Auto-generated method stub
if (haveFace) {
// Camera driver coordinates range from (-1000, -1000) to (1000, 1000).
// UI coordinates range from (0, 0) to (width, height).
int vWidth = getWidth();
int vHeight = getHeight();
for (int i = 0; i < detectedFaces.length; i++) {
if (i == 0) {
drawingPaint.setColor(Color.GREEN);
} else {
drawingPaint.setColor(Color.RED);
}
int l = detectedFaces[i].rect.left;
int t = detectedFaces[i].rect.top;
int r = detectedFaces[i].rect.right;
int b = detectedFaces[i].rect.bottom;
int left = (l + 1000) * vWidth / 2000;
int top = (t + 1000) * vHeight / 2000;
int right = (r + 1000) * vWidth / 2000;
int bottom = (b + 1000) * vHeight / 2000;
canvas.drawRect(
left, top, right, bottom,
drawingPaint);
}
} else {
canvas.drawColor(Color.TRANSPARENT);
}
Log.d("DEBUG","CHECKPOINT 3");
}
}
FaceDetectionListener faceDetectionListener
= new FaceDetectionListener()
{
@Override
public void onFaceDetection(Face[] faces, Camera tcamera)
{
final AutoFocusCallback myAutoFocusCallback = new AutoFocusCallback()
{
@Override
public void onAutoFocus(boolean arg0, Camera arg1)
{
// TODO Auto-generated method stub
if (arg0)
{
snap.setEnabled(true);
camera.cancelAutoFocus();
}
float focusDistances[] = new float[3];
arg1.getParameters().getFocusDistances(focusDistances);
info.setText("Optimal Focus Distance(meters): "
+ focusDistances[Parameters.FOCUS_DISTANCE_OPTIMAL_INDEX]);
}
};
if (faces.length == 0) {
info.setText(" No Face Detected! ");
DrawingView.setHaveFace(true);
} else {
info.setText(String.valueOf(faces.length) + " Face Detected :) ");
DrawingView.setHaveFace(false);
detectedFaces = faces;
//Set the FocusAreas using the first detected face
List<Camera.Area> focusList = new ArrayList<Camera.Area>();
Camera.Area firstFace = new Camera.Area(faces[0].rect, 1000);
focusList.add(firstFace);
if (camera.getParameters().getMaxNumFocusAreas() > 0) {
camera.getParameters().setFocusAreas(focusList);
}
if (camera.getParameters().getMaxNumMeteringAreas() > 0) {
camera.getParameters().setMeteringAreas(focusList);
}
focusList = new ArrayList<Camera.Area>();
firstFace = new Camera.Area(faces[0].rect, 1000);
focusList.add(firstFace);
if(camera.getParameters().getMaxNumFocusAreas()>0){
camera.getParameters().setFocusAreas(focusList);
}
if(camera.getParameters().getMaxNumMeteringAreas()>0){
camera.getParameters().setMeteringAreas(focusList);
}
snap.setEnabled(false);
//camera.getParameters().setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
//Stop further Face Detection
camera.stopFaceDetection();
snap.setEnabled(false);
camera.autoFocus(myAutoFocusCallback);
//Delay call autoFocus(myAutoFocusCallback)
myScheduledExecutorService = Executors.newScheduledThreadPool(1);
myScheduledExecutorService.schedule(new Runnable(){
public void run() {
camera.autoFocus(myAutoFocusCallback);
}
}, 500, TimeUnit.MILLISECONDS);
}
drawingView.invalidate();
Log.d("DEBUG", "CHECKPOINT 4");
}
};
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// TODO Auto-generated method stub
if(previewing){
camera.stopFaceDetection();
camera.stopPreview();
previewing = false;
}
Log.d("DEBUG","CHECKPOINT 5");
if (camera != null){
try {
camera.setPreviewDisplay(surfaceHolder);
camera.startPreview();
info.setText(String.valueOf(
"Max Face: " + camera.getParameters().getMaxNumDetectedFaces()));
camera.startFaceDetection();
previewing = true;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Log.d("DEBUG","CHECKPOINT 6");
}
@Override
public void surfaceCreated(SurfaceHolder holder)
{
// TODO Auto-generated method stub
camera = Camera.open();
camera.setFaceDetectionListener(faceDetectionListener);
Log.d("DEBUG", "CHECKPOINT 7");
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
camera.stopFaceDetection();
camera.stopPreview();
camera.release();
camera = null;
previewing = false;
Log.d("DEBUG","CHECKPOINT 8");
}
@Override
public void onStart() {
//super.onStart();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client.connect();
Log.d("DEBUG", "CHECKPOINT 9");
Action viewAction = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"Main Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,
// make sure this auto-generated web page URL is correct.
// Otherwise, set the URL to null.
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app deep link URI is correct.
Uri.parse("android-app://com.example.hummus.onething/http/host/path")
);
Log.d("DEBUG","CHECKPOINT 10");
client.connect();
viewAction = Action.newAction(Action.TYPE_VIEW, "The Action?", Uri.parse("android-app://com.example.hummus.onething/http/host/path"));
AppIndex.AppIndexApi.start(client, viewAction); //The Problem
Log.d("DEBUG", "CHECKPOINT 11");
}
@SuppressLint("MissingSuperCall")
@Override
public void onStop() {
// super.onStop();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
Action viewAction = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"Main Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,
// make sure this auto-generated web page URL is correct.
// Otherwise, set the URL to null.
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app deep link URI is correct.
Uri.parse("android-app://com.example.hummus.onething/http/host/path")
);
AppIndex.AppIndexApi.end(client, viewAction);
client.disconnect();
}
}
你们有什么事吗？