In My Application, My XML layout is like this:
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<View
class="com.project.twsbi.FingerPaint$MyView"
android:id="@+id/image"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</RelativeLayout>
Where MyView is the subclass of the FingerPaint Project.
Now in Java File i am going to handle that resources as like below:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(new MyView(this)); // Edited
setContentView(R.layout.main);
display = ((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
// ste resources to View of Paint
View view = (View)findViewById(R.id.image);
view = new MyView(this);
}
Now theProblem is I got the other view but not that sub class view.
Edited: After doing above, I dont get success, then i have try another method:
I have create the relative layout in to that layout and add the content view for that Relative layout but still it not works, and give me null pointer Exception:
XML code for second technique is:
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<RelativeLayout
android:id="@+id/drawingLayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
</RelativeLayout>
</RelativeLayout>
And the Java Code for the implementation is:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(new MyView(this)); // Edited
setContentView(R.layout.main);
drawingLayout = (RelativeLayout)findViewById(R.id.drawingLayout);
// ste resources to View of Paint
//view = (View)findViewById(R.id.image);
myView = new MyView(this);
RelativeLayout innerLayout = new RelativeLayout(getApplicationContext());
innerLayout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
//drawingLayout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
LayoutParams lp = drawingLayout.getLayoutParams(); // got nullPointer exception here
//innerLayout.addView(view);
//drawingLayout.addView(innerLayout);
addContentView(myView, lp);
}
So, doing above both i am not able to get the View of the sub class ? Where i am wrong ?? Please help me for this. . . Thanks.
如果您尝试在列出的布局中包含其他布局(MyView),请查看“包含和合并”: http : //developer.android.com/resources/articles/layout-tricks-merge。 html
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