我有一个FrameLayout,我为它添加了一个RelativeLayout。我的相对布局中有一些按钮。我可以使用以下代码更改与relativeLayout相关的位置:
ibrllp = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
ibrllp.topMargin=0;
ibrllp.leftMargin=0;
ib = new ImageButton(this);
ib.setImageResource(R.drawable.image);
ib.setLayoutParams(ibrllp);
rl.addView(ib);
我想添加一个imageView并在此relativeLayout上绘制一些线条。使用此代码:
rl= (RelativeLayout) findViewById(R.id.relativeLayout2);
fllp =new FrameLayout.LayoutParams(600,400);
fllp.gravity=Gravity.CENTER;
rl.setLayoutParams(fllp);
ibllpImageView= new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
ibllpImageView.topMargin=100;
ibllpImageView.leftMargin=100;
drawingImageView = new ImageView(this);
bitmap = Bitmap.createBitmap((int) getWindowManager()
.getDefaultDisplay().getWidth(), (int) getWindowManager()
.getDefaultDisplay().getHeight(), Bitmap.Config.ARGB_8888);
canvas = new Canvas(bitmap);
drawingImageView.setImageBitmap(bitmap);
paint = new Paint();
paint.setStrokeWidth(10);
paint.setColor(Color.RED);
drawingImageView.setLayoutParams(ibllpImageView);
rl.addView(drawingImageView);
canvas.drawLine(0, 0 , 400, 400, paint);
它画了一条线但处于错误的位置。我想能够设置与ralativeLayout相关的行的起点坐标。就像纽扣......但我不能...... 这段代码是我的Xml:
<FrameLayout
android:id="@+id/frameLayout4Chob"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/purple"
android:layout_weight="0.43" >
<RelativeLayout
android:id="@+id/relativeLayout4Chob"
android:layout_width="match_parent"
android:layout_height="414dp"
android:layout_gravity="center"
android:background="@drawable/blue" >
</RelativeLayout>
</FrameLayout>
问题出在哪里?