| /* |
| * Copyright (C) 2015 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.assist.testapp; |
| |
| import android.assist.common.Utils; |
| |
| import android.app.Activity; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.os.Bundle; |
| import android.text.method.ScrollingMovementMethod; |
| import android.util.Log; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewTreeObserver; |
| import android.view.ViewTreeObserver.OnGlobalLayoutListener; |
| import android.widget.ScrollView; |
| import android.widget.TextView; |
| |
| import java.lang.Override; |
| |
| public class TextViewActivity extends Activity { |
| static final String TAG = "TextViewActivity"; |
| |
| private BroadcastReceiver mReceiver; |
| private TextView mTextView; |
| private ScrollView mScrollView; |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| Log.i(TAG, "TextViewActivity created"); |
| setContentView(R.layout.text_view); |
| mScrollView = (ScrollView) findViewById(R.id.scroll_view); |
| mTextView = (TextView) findViewById(R.id.text_view); |
| mTextView.setMovementMethod(new ScrollingMovementMethod()); |
| } |
| |
| @Override |
| public void onResume() { |
| super.onResume(); |
| Log.i(TAG, "TextViewActivity has resumed"); |
| |
| mReceiver = new ScrollReceiver(); |
| IntentFilter filter = new IntentFilter(); |
| filter.addAction(Utils.SCROLL_TEXTVIEW_ACTION); |
| filter.addAction(Utils.SCROLL_SCROLLVIEW_ACTION); |
| registerReceiver(mReceiver, filter); |
| |
| final View layout = findViewById(android.R.id.content); |
| ViewTreeObserver vto = layout.getViewTreeObserver(); |
| vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() { |
| @Override |
| public void onGlobalLayout() { |
| layout.getViewTreeObserver().removeOnGlobalLayoutListener(this); |
| sendBroadcast(new Intent(Utils.APP_3P_HASRESUMED)); |
| } |
| }); |
| } |
| |
| @Override |
| public void onPause() { |
| if (mReceiver != null) { |
| unregisterReceiver(mReceiver); |
| } |
| super.onPause(); |
| } |
| |
| class ScrollReceiver extends BroadcastReceiver { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| int scrollX, scrollY; |
| scrollX = intent.getIntExtra(Utils.SCROLL_X_POSITION, 0); |
| scrollY = intent.getIntExtra(Utils.SCROLL_Y_POSITION, 0); |
| if (intent.getAction().equals(Utils.SCROLL_TEXTVIEW_ACTION)) { |
| Log.i(TAG, "Scrolling textview to (" + scrollX + "," + scrollY + ")"); |
| if (scrollX < 0 || scrollY < 0) { |
| // Scroll to bottom as negative positions are not possible. |
| scrollX = mTextView.getWidth(); |
| scrollY = mTextView.getLayout().getLineTop(mTextView.getLineCount()) |
| - mTextView.getHeight(); |
| } |
| TextViewActivity.this.mTextView.scrollTo(scrollX, scrollY); |
| } else if (intent.getAction().equals(Utils.SCROLL_SCROLLVIEW_ACTION)) { |
| Log.i(TAG, "Scrolling scrollview to (" + scrollX + "," + scrollY + ")"); |
| if (scrollX < 0 || scrollY < 0) { |
| // Scroll to bottom |
| TextViewActivity.this.mScrollView.fullScroll(View.FOCUS_DOWN); |
| TextViewActivity.this.mScrollView.fullScroll(View.FOCUS_RIGHT); |
| } else { |
| TextViewActivity.this.mScrollView.scrollTo(scrollX, scrollY); |
| } |
| } |
| Log.i(TAG, "the max height of this textview is: " + mTextView.getHeight()); |
| Log.i(TAG, "the max line count of this text view is: " + mTextView.getMaxLines()); |
| } |
| } |
| } |