要更改单个TextureView的位图,可以按照以下步骤进行操作:
下面是一个示例代码:
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.SurfaceTexture;
import android.opengl.GLES20;
import android.opengl.GLUtils;
import android.view.TextureView;
public class TextureViewUtils {
public static void changeTextureViewBitmap(TextureView textureView, Bitmap bitmap) {
// 获取SurfaceTexture对象
SurfaceTexture surfaceTexture = textureView.getSurfaceTexture();
if (surfaceTexture == null) return;
// 将SurfaceTexture对象转换为OpenGL纹理
int[] textures = new int[1];
GLES20.glGenTextures(1, textures, 0);
int textureId = textures[0];
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureId);
GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
// 加载新的位图数据到纹理对象中
GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0);
// 绘制新的位图到TextureView上
Canvas canvas = textureView.lockCanvas();
if (canvas != null) {
canvas.drawBitmap(bitmap, 0, 0, new Paint());
textureView.unlockCanvasAndPost(canvas);
}
}
}
使用上述代码,可以通过调用changeTextureViewBitmap(textureView, bitmap)
方法来更改TextureView的位图。其中,textureView
是要更改的TextureView对象,bitmap
是要更改为的新位图。