Java 相机上的文字不出现，如何使其出现？
它仅在切换镜头相机时出现一秒钟。我制作了滤镜，我希望滤镜出现在摄像机上，这样用户可以点击他们想要的滤镜，然后点击录制来录制视频。但是它没有显示，我仍然可以点击它，虽然，这是工作，过滤器是好的，只是过滤器的名称/文本没有显示，所以没有人知道他们在那里，除非他们的手指碰巧碰上其中一个文本/名称。我没有得到任何错误，所以我不知道问题出在哪里 如何使文本/名称在摄像机上可见 我的xml：Java 相机上的文字不出现，如何使其出现？,java,android-studio,Java,Android Studio,它仅在切换镜头相机时出现一秒钟。我制作了滤镜，我希望滤镜出现在摄像机上，这样用户可以点击他们想要的滤镜，然后点击录制来录制视频。但是它没有显示，我仍然可以点击它，虽然，这是工作，过滤器是好的，只是过滤器的名称/文本没有显示，所以没有人知道他们在那里，除非他们的手指碰巧碰上其中一个文本/名称。我没有得到任何错误，所以我不知道问题出在哪里 如何使文本/名称在摄像机上可见 我的xml： <?xml version="1.0" encoding="utf-8"
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white"
android:keepScreenOn="true">
<ImageView
android:id="@+id/filter_btn"
android:layout_width="67dp"
android:layout_height="53dp"
android:contentDescription="@string/filter_btn"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="@+id/btn_record"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/filter_list"
app:srcCompat="@drawable/ic_toys" />
<ImageView
android:id="@+id/cross"
android:layout_width="43dp"
android:layout_height="43dp"
android:contentDescription="@string/cross"
app:layout_constraintBottom_toTopOf="@+id/filter_list"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@drawable/ic_cross" />
<ListView
android:id="@+id/filter_list"
android:layout_width="119dp"
android:layout_height="563dp"
android:visibility="visible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="@+id/btn_record"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:visibility="visible" />
<com.anisacoding.expriment.VideoEditorFolder.widget.PortraitFrameLayout
android:id="@+id/wrap_view"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="1.0">
</com.anisacoding.expriment.VideoEditorFolder.widget.PortraitFrameLayout>
<ImageView
android:id="@+id/btn_record"
android:layout_width="100dp"
android:layout_height="100dp"
android:contentDescription="@string/record_Video"
android:text="@string/app_record"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.454"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.926"
app:srcCompat="@drawable/ic_btn_record" />
<ImageView
android:id="@+id/btn_switch_camera"
android:layout_width="71dp"
android:layout_height="47dp"
android:src="@drawable/ic_switch"
android:text="@string/SWITCH"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.91"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.052"
app:srcCompat="@drawable/ic_switch"
android:contentDescription="@string/SWITCH" />
<ImageView
android:id="@+id/btn_flash"
android:layout_width="51dp"
android:layout_height="40dp"
android:contentDescription="@string/flash"
android:text="@string/flash"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.95"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.2"
app:srcCompat="@drawable/ic_flash" />
<ImageView
android:id="@+id/pause_video"
android:layout_width="90dp"
android:layout_height="54dp"
android:contentDescription="@string/record_Video"
android:text="@string/pause"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.454"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.926"
android:color="#FF0000"
app:srcCompat="@drawable/ic_stop" />
<ImageView
android:id="@+id/music_library3"
android:layout_width="52dp"
android:layout_height="47dp"
android:contentDescription="@string/library_music"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.45"
app:layout_constraintLeft_toLeftOf="@+id/btn_record"
app:layout_constraintStart_toStartOf="@+id/guideline18"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.926"
app:srcCompat="@drawable/ic_music_golibrary" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline18"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.7347932" />
<TextView
android:id="@+id/timer2"
android:layout_width="53dp"
android:layout_height="43dp"
android:layout_marginStart="25dp"
android:layout_marginTop="25dp"
android:text="@string/_2_m"
android:textStyle="bold"
android:textSize="20sp"
android:textColor="#Ff0000"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="@+id/guideline18"
app:layout_constraintTop_toBottomOf="@+id/btn_flash" />
</androidx.constraintlayout.widget.ConstraintLayout>
import android.opengl.EGL14;
import android.opengl.EGLConfig;
import android.opengl.EGLContext;
import android.opengl.EGLDisplay;
import android.opengl.EGLExt;
import android.opengl.EGLSurface;
import android.view.Surface;
// Refer : https://android.googlesource.com/platform/cts/+/lollipop-release/tests/tests/media/src/android/media/cts/InputSurface.java
/**
* Holds state associated with a Surface used for MediaCodec encoder input.
* <p>
* The constructor takes a Surface obtained from MediaCodec.createInputSurface(), and uses that
* to create an EGL window surface. Calls to eglSwapBuffers() cause a frame of data to be sent
* to the video encoder.
*/
class EncoderSurface {
private static final int EGL_RECORDABLE_ANDROID = 0x3142;
private EGLDisplay eglDisplay = EGL14.EGL_NO_DISPLAY;
private EGLContext eglContext = EGL14.EGL_NO_CONTEXT;
private EGLSurface eglSurface = EGL14.EGL_NO_SURFACE;
private Surface surface;
/**
* Creates an EncoderSurface from a Surface.
*/
EncoderSurface(Surface surface) {
if (surface == null) {
throw new NullPointerException();
}
this.surface = surface;
eglSetup();
}
/**
* Prepares EGL. We want a GLES 2.0 context and a surface that supports recording.
*/
private void eglSetup() {
eglDisplay = EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY);
if (eglDisplay == EGL14.EGL_NO_DISPLAY) {
throw new RuntimeException("unable to get EGL14 display");
}
int[] version = new int[2];
if (!EGL14.eglInitialize(eglDisplay, version, 0, version, 1)) {
eglDisplay = null;
throw new RuntimeException("unable to initialize EGL14");
}
// Configure EGL for recordable and OpenGL ES 2.0. We want enough RGB bits
// to minimize artifacts from possible YUV conversion.
int[] attribList = {
EGL14.EGL_RED_SIZE, 8,
EGL14.EGL_GREEN_SIZE, 8,
EGL14.EGL_BLUE_SIZE, 8,
EGL14.EGL_RENDERABLE_TYPE, EGL14.EGL_OPENGL_ES2_BIT,
EGL_RECORDABLE_ANDROID, 1,
EGL14.EGL_NONE
};
EGLConfig[] configs = new EGLConfig[1];
int[] numConfigs = new int[1];
if (!EGL14.eglChooseConfig(eglDisplay, attribList, 0, configs, 0, configs.length,
numConfigs, 0)) {
throw new RuntimeException("unable to find RGB888+recordable ES2 EGL config");
}
// Configure context for OpenGL ES 2.0.
int[] attrib_list = {
EGL14.EGL_CONTEXT_CLIENT_VERSION, 2,
EGL14.EGL_NONE
};
eglContext = EGL14.eglCreateContext(eglDisplay, configs[0], EGL14.EGL_NO_CONTEXT,
attrib_list, 0);
checkEglError("eglCreateContext");
if (eglContext == null) {
throw new RuntimeException("null context");
}
// Create a window surface, and attach it to the Surface we received.
int[] surfaceAttribs = {
EGL14.EGL_NONE
};
eglSurface = EGL14.eglCreateWindowSurface(eglDisplay, configs[0], surface,
surfaceAttribs, 0);
checkEglError("eglCreateWindowSurface");
if (eglSurface == null) {
throw new RuntimeException("surface was null");
}
}
/**
* Discard all resources held by this class, notably the EGL context. Also releases the
* Surface that was passed to our constructor.
*/
public void release() {
if (eglDisplay != EGL14.EGL_NO_DISPLAY) {
EGL14.eglDestroySurface(eglDisplay, eglSurface);
EGL14.eglDestroyContext(eglDisplay, eglContext);
EGL14.eglReleaseThread();
EGL14.eglTerminate(eglDisplay);
}
surface.release();
eglDisplay = EGL14.EGL_NO_DISPLAY;
eglContext = EGL14.EGL_NO_CONTEXT;
eglSurface = EGL14.EGL_NO_SURFACE;
surface = null;
}
/**
* Makes our EGL context and surface current.
*/
void makeCurrent() {
if (!EGL14.eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext)) {
throw new RuntimeException("eglMakeCurrent failed");
}
}
/**
* Calls eglSwapBuffers. Use this to "publish" the current frame.
*/
void swapBuffers() {
EGL14.eglSwapBuffers(eglDisplay, eglSurface);
}
/**
* Sends the presentation time stamp to EGL. Time is expressed in nanoseconds.
*/
void setPresentationTime(long nsecs) {
EGLExt.eglPresentationTimeANDROID(eglDisplay, eglSurface, nsecs);
}
/**
* Checks for EGL errors.
*/
private void checkEglError(String msg) {
int error;
if ((error = EGL14.eglGetError()) != EGL14.EGL_SUCCESS) {
throw new RuntimeException(msg + ": EGL error: 0x" + Integer.toHexString(error));
}
}
}
导入android.opengl.EGL14；
导入android.opengl.EGLConfig；
导入android.opengl.EGLContext；
导入android.opengl.EGLDisplay；
导入android.opengl.EGLExt；
导入android.opengl.EGLSurface；
导入android.view.Surface；
//参考：https://android.googlesource.com/platform/cts/+/棒棒糖发布/tests/tests/media/src/android/media/cts/InputSurface.java
/**
*保存与用于MediaCodec编码器输入的曲面关联的状态。
*
*构造函数获取从MediaCodec.createInputSurface（）获得的曲面，并使用该曲面
*创建EGL窗曲面的步骤。调用eglSwapBuffers（）会导致发送一帧数据
*到视频编码器。
*/
类编码器曲面{
私有静态最终int EGL_可记录_ANDROID=0x3142；
专用EGLDisplay EGLDisplay=EGL14.EGL\u无显示；
private EGLContext EGLContext=EGL14.EGL\u NO\u CONTEXT；
专用EGL曲面EGL曲面=EGL14.EGL_无_曲面；
私人表面；
/**
*从曲面创建编码器曲面。
*/
编码器表面（表面）{
如果（曲面==null）{
抛出新的NullPointerException（）；
}
这个表面=表面；
eglSetup（）；
}
/**
*准备EGL。我们需要一个GLE2.0上下文和一个支持录制的表面。
*/
私有void eglSetup（）{
eglDisplay=EGL14.eglGetDisplay（EGL14.EGL\u默认显示）；
if（eglDisplay==EGL14.EGL\u无显示）{
抛出新的RuntimeException（“无法获取EGL14显示”）；
}
int[]版本=新int[2]；
if（！EGL14.eglInitialize（eglDisplay，version，0，version，1））{
eglDisplay=null；
抛出新的RuntimeException（“无法初始化EGL14”）；
}
//为可记录和OpenGL ES 2.0配置EGL。我们需要足够的RGB位
//尽量减少可能的YUV转换产生的瑕疵。
int[]属性列表={
EGL14.EGL_红色_尺寸，8，
EGL14.EGL_绿色_尺寸，8，
EGL14.EGL_蓝色_尺寸，8，
EGL14.EGL_可渲染类型，EGL14.EGL_OPENGL_ES2_位，
EGL_可记录机器人，1，
EGL14.EGL_无
};
EGLConfig[]configs=新的EGLConfig[1]；
int[]numconfig=newint[1]；
如果（！EGL14.eglChooseConfig）（eglDisplay，attribList，0，configs，0，configs.length，
numconfig，0）{
抛出新的RuntimeException（“找不到RGB888+可记录ES2 EGL配置”）；
}
//为OpenGL ES 2.0配置上下文。
int[]属性列表={
EGL14.EGL_上下文_客户端_版本，2，
EGL14.EGL_无
};
eglContext=EGL14.eglCreateContext（eglDisplay，configs[0]，EGL14.EGL\u NO\u CONTEXT，
属性列表，0）；
checkEglError（“eglCreateContext”）；
if（eglContext==null）{
抛出新的RuntimeException（“空上下文”）；
}
//创建一个窗口曲面，并将其附着到我们收到的曲面。
int[]表面纹理={
EGL14.EGL_无
};
eglSurface=EGL14.EGLCreateWindowsSurface（eglDisplay，配置[0]，表面，
表面粗糙度，0）；
CheckLerror（“EGLCreateWindowsSurface”）；
if（eglSurface==null）{
抛出新的运行时异常（“表面为空”）；
}
}
/**
*放弃此类持有的所有资源，尤其是EGL上下文
*传递给构造函数的曲面。
*/
公开无效释放（）{
if（eglDisplay！=EGL14.EGL\u无显示）{
EGL14.eglDestroySurface（eglDisplay，eglSurface）；
EGL14.eglDestroyContext（eglDisplay，eglContext）；
EGL14.eglReleaseThread（）；
EGL14.eglTerminate（eglDisplay）；
}
表面。释放（）；
eglDisplay=EGL14.EGL\u无显示；
eglContext=EGL14.EGL\u无上下文；
EGL表面=EGL14.EGL_无表面；
表面=零；
}
/**
*使我们的EGL环境和表面最新。
*/
void makeCurrent（）{
if（！EGL14.eglmakefurrent（eglDisplay，eglSurface，eglSurface，eglContext））{
抛出新的运行时异常（“eglMakeCurrent失败”）；
}
}
/**
*调用eglSwapBuffers。使用它“发布”当前帧。
*/
无效交换缓冲区（）{
EGL14.eglSwapBuffers（eglDisplay，eglSurface）；
}
/**
*将表示时间戳发送到EGL。时间以纳秒表示。
*/
void setPresentationTime（长NSEC）{
EGLExt.eglPresentationTimeANDROID（eglDisplay、eglSurface、nsecs）；
}
/**
*检查EGL错误。
*/
私有无效校验错误（字符串消息）{
整数误差；
if（（error=EGL14.eglGetError（））！=EGL14.EGL_成功）{
抛出新的运行时异常（msg+“：EGL错误：0x”+整数.toHexString（错误））；
}
}
}
import android.opengl.EGL14;
import android.opengl.EGLConfig;
import android.opengl.EGLContext;
import android.opengl.EGLDisplay;
import android.opengl.EGLExt;
import android.opengl.EGLSurface;
import android.view.Surface;
// Refer : https://android.googlesource.com/platform/cts/+/lollipop-release/tests/tests/media/src/android/media/cts/InputSurface.java
/**
* Holds state associated with a Surface used for MediaCodec encoder input.
* <p>
* The constructor takes a Surface obtained from MediaCodec.createInputSurface(), and uses that
* to create an EGL window surface. Calls to eglSwapBuffers() cause a frame of data to be sent
* to the video encoder.
*/
class EncoderSurface {
private static final int EGL_RECORDABLE_ANDROID = 0x3142;
private EGLDisplay eglDisplay = EGL14.EGL_NO_DISPLAY;
private EGLContext eglContext = EGL14.EGL_NO_CONTEXT;
private EGLSurface eglSurface = EGL14.EGL_NO_SURFACE;
private Surface surface;
/**
* Creates an EncoderSurface from a Surface.
*/
EncoderSurface(Surface surface) {
if (surface == null) {
throw new NullPointerException();
}
this.surface = surface;
eglSetup();
}
/**
* Prepares EGL. We want a GLES 2.0 context and a surface that supports recording.
*/
private void eglSetup() {
eglDisplay = EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY);
if (eglDisplay == EGL14.EGL_NO_DISPLAY) {
throw new RuntimeException("unable to get EGL14 display");
}
int[] version = new int[2];
if (!EGL14.eglInitialize(eglDisplay, version, 0, version, 1)) {
eglDisplay = null;
throw new RuntimeException("unable to initialize EGL14");
}
// Configure EGL for recordable and OpenGL ES 2.0. We want enough RGB bits
// to minimize artifacts from possible YUV conversion.
int[] attribList = {
EGL14.EGL_RED_SIZE, 8,
EGL14.EGL_GREEN_SIZE, 8,
EGL14.EGL_BLUE_SIZE, 8,
EGL14.EGL_RENDERABLE_TYPE, EGL14.EGL_OPENGL_ES2_BIT,
EGL_RECORDABLE_ANDROID, 1,
EGL14.EGL_NONE
};
EGLConfig[] configs = new EGLConfig[1];
int[] numConfigs = new int[1];
if (!EGL14.eglChooseConfig(eglDisplay, attribList, 0, configs, 0, configs.length,
numConfigs, 0)) {
throw new RuntimeException("unable to find RGB888+recordable ES2 EGL config");
}
// Configure context for OpenGL ES 2.0.
int[] attrib_list = {
EGL14.EGL_CONTEXT_CLIENT_VERSION, 2,
EGL14.EGL_NONE
};
eglContext = EGL14.eglCreateContext(eglDisplay, configs[0], EGL14.EGL_NO_CONTEXT,
attrib_list, 0);
checkEglError("eglCreateContext");
if (eglContext == null) {
throw new RuntimeException("null context");
}
// Create a window surface, and attach it to the Surface we received.
int[] surfaceAttribs = {
EGL14.EGL_NONE
};
eglSurface = EGL14.eglCreateWindowSurface(eglDisplay, configs[0], surface,
surfaceAttribs, 0);
checkEglError("eglCreateWindowSurface");
if (eglSurface == null) {
throw new RuntimeException("surface was null");
}
}
/**
* Discard all resources held by this class, notably the EGL context. Also releases the
* Surface that was passed to our constructor.
*/
public void release() {
if (eglDisplay != EGL14.EGL_NO_DISPLAY) {
EGL14.eglDestroySurface(eglDisplay, eglSurface);
EGL14.eglDestroyContext(eglDisplay, eglContext);
EGL14.eglReleaseThread();
EGL14.eglTerminate(eglDisplay);
}
surface.release();
eglDisplay = EGL14.EGL_NO_DISPLAY;
eglContext = EGL14.EGL_NO_CONTEXT;
eglSurface = EGL14.EGL_NO_SURFACE;
surface = null;
}
/**
* Makes our EGL context and surface current.
*/
void makeCurrent() {
if (!EGL14.eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext)) {
throw new RuntimeException("eglMakeCurrent failed");
}
}
/**
* Calls eglSwapBuffers. Use this to "publish" the current frame.
*/
void swapBuffers() {
EGL14.eglSwapBuffers(eglDisplay, eglSurface);
}
/**
* Sends the presentation time stamp to EGL. Time is expressed in nanoseconds.
*/
void setPresentationTime(long nsecs) {
EGLExt.eglPresentationTimeANDROID(eglDisplay, eglSurface, nsecs);
}
/**
* Checks for EGL errors.
*/
private void checkEglError(String msg) {
int error;
if ((error = EGL14.eglGetError()) != EGL14.EGL_SUCCESS) {
throw new RuntimeException(msg + ": EGL error: 0x" + Integer.toHexString(error));
}
}
}