PawletOS/app_Settings
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Enable button only when scrollview reached the bottom

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Bug: 28410288
Test: make RunSettingsRoboTests
Change-Id: I04653c377f7d419b6701b5589ff25961e0f5c077
This commit is contained in:
jackqdyulei
2016-12-13 17:07:08 -08:00
parent 4eba3954e2
commit 0b3edc728e
3 changed files with 117 additions and 0 deletions
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40
src/com/android/settings/MasterClear.java
View File

@@ -31,14 +31,18 @@ import android.os.Environment;
import android.os.SystemProperties;
import android.os.UserHandle;
import android.os.UserManager;
import android.support.annotation.VisibleForTesting;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnScrollChangeListener;
import android.view.ViewGroup;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ScrollView;
import android.widget.TextView;
import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
@@ -69,6 +73,15 @@ public class MasterClear extends OptionsMenuFragment {
private Button mInitiateButton;
private View mExternalStorageContainer;
private CheckBox mExternalStorage;
private ScrollView mScrollView;
private final OnGlobalLayoutListener mOnGlobalLayoutListener = new OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
mScrollView.getViewTreeObserver().removeOnGlobalLayoutListener(mOnGlobalLayoutListener);
mInitiateButton.setEnabled(hasReachedBottom(mScrollView));
}
};
/**
* Keyguard validation is run using the standard {@link ConfirmLockPattern}
@@ -137,6 +150,7 @@ public class MasterClear extends OptionsMenuFragment {
mInitiateButton.setOnClickListener(mInitiateListener);
mExternalStorageContainer = mContentView.findViewById(R.id.erase_external_container);
mExternalStorage = (CheckBox) mContentView.findViewById(R.id.erase_external);
mScrollView = (ScrollView) mContentView.findViewById(R.id.master_clear_scrollview);
/*
* If the external storage is emulated, it will be erased with a factory
@@ -175,6 +189,32 @@ public class MasterClear extends OptionsMenuFragment {
View masterClearContainer = mContentView.findViewById(R.id.master_clear_container);
getContentDescription(masterClearContainer, contentDescription);
masterClearContainer.setContentDescription(contentDescription);
// Set the status of initiateButton based on scrollview
mScrollView.setOnScrollChangeListener(new OnScrollChangeListener() {
@Override
public void onScrollChange(View v, int scrollX, int scrollY, int oldScrollX,
int oldScrollY) {
if (v instanceof ScrollView && hasReachedBottom((ScrollView) v)) {
mInitiateButton.setEnabled(true);
}
}
});
// Set the initial state of the initiateButton
mScrollView.getViewTreeObserver().addOnGlobalLayoutListener(mOnGlobalLayoutListener);
}
@VisibleForTesting
boolean hasReachedBottom(final ScrollView scrollView) {
if (scrollView.getChildCount() < 1) {
return true;
}
final View view = scrollView.getChildAt(0);
final int diff = view.getBottom() - (scrollView.getHeight() + scrollView.getScrollY());
return diff <= 0;
}
private void getContentDescription(View v, StringBuffer description) {