diff --git a/src/com/android/settings/DeviceAdminAdd.java b/src/com/android/settings/DeviceAdminAdd.java index 83b222b9b4e..bcd247e0ca0 100644 --- a/src/com/android/settings/DeviceAdminAdd.java +++ b/src/com/android/settings/DeviceAdminAdd.java @@ -49,6 +49,7 @@ import android.util.Log; import android.view.Display; import android.view.View; import android.view.ViewGroup; +import android.view.ViewTreeObserver; import android.view.WindowManager; import android.widget.AppSecurityPermissions; import android.widget.Button; @@ -245,11 +246,32 @@ public class DeviceAdminAdd extends Activity { mAddMsg = (TextView)findViewById(R.id.add_msg); mAddMsgExpander = (ImageView) findViewById(R.id.add_msg_expander); - mAddMsg.setOnClickListener(new View.OnClickListener() { + final View.OnClickListener onClickListener = new View.OnClickListener() { + @Override public void onClick(View v) { - toggleMessageEllipsis(v); + toggleMessageEllipsis(mAddMsg); } - }); + }; + mAddMsgExpander.setOnClickListener(onClickListener); + mAddMsg.setOnClickListener(onClickListener); + + // Determine whether the message can be collapsed - getLineCount() gives the correct + // number of lines only after a layout pass. + mAddMsg.getViewTreeObserver().addOnGlobalLayoutListener( + new ViewTreeObserver.OnGlobalLayoutListener() { + @Override + public void onGlobalLayout() { + final int maxLines = getEllipsizedLines(); + // hide the icon if number of visible lines does not exceed maxLines + boolean hideMsgExpander = mAddMsg.getLineCount() <= maxLines; + mAddMsgExpander.setVisibility(hideMsgExpander ? View.GONE : View.VISIBLE); + if (hideMsgExpander) { + mAddMsg.setOnClickListener(null); + ((View)mAddMsgExpander.getParent()).invalidate(); + } + mAddMsg.getViewTreeObserver().removeOnGlobalLayoutListener(this); + } + }); // toggleMessageEllipsis also handles initial layout: toggleMessageEllipsis(mAddMsg);