小编Vee*_*sh 的帖子

我想在我的自定义相机中实现tap to focus功能.这是Google提供的基本代码https://github.com/googlesamples/android-Camera2Basic

这里是我认为我应该添加我的功能的代码片段如果有人已经实现了Camera2 API,请帮忙!

  private void lockFocus() {
    try {
        // This is how to tell the camera to lock focus.
        mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER,
                CameraMetadata.CONTROL_AF_TRIGGER_START);
        // Tell #mCaptureCallback to wait for the lock.
        mState = STATE_WAITING_LOCK;
        mCaptureSession.capture(mPreviewRequestBuilder.build(), mCaptureCallback,
                mBackgroundHandler);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}

我有来自https://github.com/googlesamples/android-Camera2Basic的Camera2的代码.

我面临的问题是,当我转向我的前置摄像头时,我无法捕捉图片,但使用后置摄像头可以正常工作.

有没有人实施Camera2 Api请帮忙!

这是代码片段:

private void setUpCameraOutputs(int width, int height) {
    Activity activity = getActivity();
    CameraManager manager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE);
    try {
        for (String cameraId : manager.getCameraIdList()) {
            CameraCharacteristics characteristics
                    = manager.getCameraCharacteristics(cameraId);

            // We don't use a front facing camera in this sample.
            int facing = characteristics.get(CameraCharacteristics.LENS_FACING);
            Log.i(TAG,"Front Cam ID: "+ facing);
            if (characteristics.get(CameraCharacteristics.LENS_FACING)==CameraCharacteristics.LENS_FACING_FRONT)
            {



                StreamConfigurationMap map = characteristics.get(
                        CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);


                // For still image captures, we use the largest available size.
                Size largest = Collections.max(
                        Arrays.asList(map.getOutputSizes(ImageFormat.JPEG)),
                        new …

我是android开发的新手.这是我遇到的问题.我正在使用Android Studio.我查了很多网站,他们说要导入相关的课程.完成后,问题仍然存在.任何帮助表示赞赏.

任何人都可以帮我这个,我一直在寻找解决方案.

这是代码:

package com.example.veeresh.myapplication;
//import statements
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import android.view.View;
import android.widget.TextView;

public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button button1 = (Button)findViewById(R.id.button1);

        button1.setOnClickListener(
                //error: cannot find symbol class onClickListener
                new Button.onClickListener()
                {
                    public void onClick(View v)
                    {
                        TextView text1 = (TextView)findViewById(R.id.text1);
                        text1.setText("Veeresh Here");
                    }
                }
                );
    }
}

错误:

错误:(
24,27 )错误:无法找到符号类onClickListener 错误:任务':app:compileDebugJava'的执行失败.
编译失败; 请参阅编译器错误输出以获取详细信

基本上我正在尝试使用(MinSDK设置为11)添加后退功能

getActionBar().setDisplayHomeAsUpEnabled(true);

这是我的功能:

public class DetailActivity extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.detail_layout);
    getActionBar().setDisplayHomeAsUpEnabled(true);


}

Logcat详细信息:

07-28 18:26:50.030  19793-19795/? E/art? Failed writing handshake bytes (-1 of 14): Broken pipe