Android example source code file (RequestRectangleVisibleWithInternalScroll.java)

This example Android source code file (RequestRectangleVisibleWithInternalScroll.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

activity, android, app, button, os, rect, requestrectanglevisiblewithinternalscroll, textview, ui, view, widget

The RequestRectangleVisibleWithInternalScroll.java Android example source code

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.widget.scroll;

import com.android.frameworks.coretests.R;

import android.app.Activity;
import android.os.Bundle;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Button;
import android.view.View;
import android.graphics.Rect;

public class RequestRectangleVisibleWithInternalScroll extends Activity {

    private int scrollYofBlob = 52;

    private TextView mTextBlob;
    private Button mScrollToBlob;


    public int getScrollYofBlob() {
        return scrollYofBlob;
    }


    public TextView getTextBlob() {
        return mTextBlob;
    }


    public Button getScrollToBlob() {
        return mScrollToBlob;
    }

    protected void onCreate(Bundle icicle) {
        super.onCreate(icicle);

        setContentView(R.layout.scroll_to_rect_with_internal_scroll);

        mTextBlob = (TextView) findViewById(R.id.blob);
        mTextBlob.scrollBy(0, scrollYofBlob);


        mScrollToBlob = (Button) findViewById(R.id.scrollToBlob);
        mScrollToBlob.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {

                // the rect we want to make visible is offset to match
                // the internal scroll
                Rect rect = new Rect();
                rect.set(0, 0, 0, mTextBlob.getHeight());
                rect.offset(0, mTextBlob.getScrollY());
                mTextBlob.requestRectangleOnScreen(rect);
            }
        });
    }


}