0
對所有Android開發人員您好！拍攝和保存時的Android自定義相機圖片圖片完全黑色
我正在使用自定義相機（Android NDK），我將在其中應用一些過濾器。現在確定，但是當我捕獲圖片並保存它時，圖片會變成完全黑色的圖像。首先，我轉換拍攝的圖像以位圖和解碼它，更多的瞭解我在這裏向您發送我的完整代碼....
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera);
toolbar = (Toolbar) findViewById(R.id.downloadToolbal);
setSupportActionBar(toolbar);
context = CameraActivity.this;
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
finish();
}
});
cameraEngine = new CameraEngine(this);
MagicEngine.Builder builder = new MagicEngine.Builder();
magicEngine = builder.build((MagicCameraView) findViewById(R.id.gl_surface_camera));
camera_image = (ImageView)findViewById(R.id.cameraImg);
cameraSurface = (RelativeLayout)findViewById(R.id.camera_surface);
cameraSurface.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
cameraEngine.takePicture(mPicture);
}
});
mFilterListView = (RecyclerView) findViewById(R.id.filter_listView);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
linearLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
mFilterListView.setLayoutManager(linearLayoutManager);
mAdapter = new FilterAdapter(this, types);
mFilterListView.setAdapter(mAdapter);
mAdapter.setOnFilterChangeListener(new FilterAdapter.onFilterChangeListener() {
@Override
public void onFilterChanged(MagicFilterType filterType) {
magicEngine.setFilter(filterType);
}
});
}
也看到這裏
private Camera.PictureCallback mPicture = new Camera.PictureCallback() {
@Override
public void onPictureTaken(byte[] data, Camera camera) {
dir_image2 = new File(Environment.getExternalStorageDirectory()+
File.separator+"My Custom Folder");
dir_image2.mkdirs();
File tmpFile = new File(dir_image2,"TempImage.jpg");
try {
fos = new FileOutputStream(tmpFile);
fos.write(data);
fos.close();
} catch (FileNotFoundException e) {
Toast.makeText(getApplicationContext(),"Error",Toast.LENGTH_LONG).show();
} catch (IOException e) {
Toast.makeText(getApplicationContext(),"Error",Toast.LENGTH_LONG).show();
}
options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
bmp1 = decodeFile(tmpFile);
bmp=Bitmap.createScaledBitmap(bmp1,cameraSurface.getWidth(), cameraSurface.getHeight(),true);
camera_image.setImageBitmap(bmp);
tmpFile.delete();
savePicture();
}
};
private static Bitmap decodeFile(File f) {
Bitmap b = null;
try {
// Decode image size
o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
fis = new FileInputStream(f);
BitmapFactory.decodeStream(fis, null, o);
fis.close();
int IMAGE_MAX_SIZE = 1000;
int scale = 1;
if (o.outHeight > IMAGE_MAX_SIZE || o.outWidth > IMAGE_MAX_SIZE) {
scale = (int) Math.pow(
2,
(int) Math.round(Math.log(IMAGE_MAX_SIZE
/(double) Math.max(o.outHeight, o.outWidth))
/Math.log(0.5)));
}
// Decode with inSampleSize
o2 = new BitmapFactory.Options();
o2.inSampleSize = scale;
fis = new FileInputStream(f);
b = BitmapFactory.decodeStream(fis, null, o2);
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
return b;
}
如果你想知道MagicEngine那麼這裏的類是貝婁
public class MagicEngine {
private static MagicEngine magicEngine;
public static MagicEngine getInstance(){
if(magicEngine == null)
throw new NullPointerException("MagicEngine must be built first");
else
return magicEngine;
}
private MagicEngine(Builder builder){
}
public void setFilter(MagicFilterType type){
MagicParams.magicBaseView.setFilter(type);
}
public void savePicture(File file, SavePictureTask.OnPictureSaveListener listener){
SavePictureTask savePictureTask = new SavePictureTask(file, listener);
MagicParams.magicBaseView.savePicture(savePictureTask);
}
public void startRecord(){
if(MagicParams.magicBaseView instanceof MagicCameraView)
((MagicCameraView)MagicParams.magicBaseView).changeRecordingState(true);
}
public void stopRecord(){
if(MagicParams.magicBaseView instanceof MagicCameraView)
((MagicCameraView)MagicParams.magicBaseView).changeRecordingState(false);
}
public void setBeautyLevel(int level){
if(MagicParams.magicBaseView instanceof MagicCameraView && MagicParams.beautyLevel != level) {
MagicParams.beautyLevel = level;
((MagicCameraView) MagicParams.magicBaseView).onBeautyLevelChanged();
}
}
public void switchCamera(){
CameraEngine.switchCamera();
}
public static class Builder{
public MagicEngine build(MagicBaseView magicBaseView) {
MagicParams.context = magicBaseView.getContext();
MagicParams.magicBaseView = magicBaseView;
return new MagicEngine(this);
}
public Builder setVideoPath(String path){
MagicParams.videoPath = path;
return this;
}
public Builder setVideoName(String name){
MagicParams.videoName = name;
return this;
}
}
}
另見.XML
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/camera_surface"
android:layout_below="@+id/downloadToolbal"
android:layout_weight="1">
<ImageView
android:id="@+id/cameraImg"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<com.seu.magicfilter.widget.MagicCameraView
android:id="@+id/gl_surface_camera"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/filter_listView"
android:layout_width="match_parent"
android:layout_height="100dp"
android:background="@android:color/white"
android:padding="@dimen/margin_small"
android:scrollbars="none" />
查看我的答案。如果您有任何疑問，請告訴我。 –
你好@Andy開發者感謝您的回覆...以及這是有幫助的，但這不是根據我的代碼..你能否請你解釋一下我的代碼真的很感謝你 –
歡迎:)你試過我的建議嗎？ –