Question

以下代码来自Android开发者＆＃39;在以下URL处构建摄像机的指南。请花点时间帮我解决这个问题。最好的祝愿！ The aforementioned site

错误似乎是：

我在id ...
setOnclickListener，setCaptureButtonText，View v，@ Override和mMediaRecorder显示为错误。
The）最后也被突出显示为错误。

这是来自activity.xml文件的代码，显示了被引用的按钮：

<Button
    android:id="@+id/button_capture"
    android:text="Capture"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    />

以下代码本身：

    private boolean isRecording = false;

    // Add a listener to the Capture button
    Button captureButton = (Button) findViewById(id.button_capture);
    captureButton.setOnClickListener(
    new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        if (isRecording) {
            // stop recording and release camera
            mMediaRecorder.stop();  // stop the recording
            releaseMediaRecorder(); // release the MediaRecorder object
            mCamera.lock();         // take camera access back from MediaRecorder

            // inform the user that recording has stopped
            setCaptureButtonText("Capture");
            isRecording = false;
        } else {
            // initialize video camera
            if (prepareVideoRecorder()) {
                // Camera is available and unlocked, MediaRecorder is prepared,
                // now you can start recording
                mMediaRecorder.start();

                // inform the user that recording has started
                setCaptureButtonText("Stop");
                isRecording = true;
            } else {
                // prepare didn't work, release the camera
                releaseMediaRecorder();
                // inform user
            }
        }
    }
    }
    );

Answer 1

由于您使用的是XML，因此您应该直接将属性添加到对象中。无论你告诉它运行什么功能都会运行。无需添加任何其他侦听器。

<Button
    android:id="@+id/button_capture"
    android:text="Capture"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:onClick="yourFunction"
    />

如何在Android Studio项目中实现以下OnClick代码？

1 个答案: