如何在Android中设置对话框的图标
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How to set icon for dialog in Android
提问by D T
I want to customize a dialog in Android. I know how to set the title for dialog:
我想在 Android 中自定义一个对话框。我知道如何设置对话框的标题：
dialog.setTitle("O message");
Now I want to set the icon in front of the title. How can I achieve this?
现在我想在标题前面设置图标。我怎样才能做到这一点？
Dialog dialog;
dialog = new Dialog(this);
dialog.setContentView(R.layout.layouterror22);
dialog.setTitle("O message");
回答by D T
You can add an icon with the following code:
您可以使用以下代码添加图标：
Dialog dialog = new Dialog(context);
dialog.requestWindowFeature(Window.FEATURE_LEFT_ICON);
dialog.setFeatureDrawableResource(Window.FEATURE_LEFT_ICON, R.drawable.your_icon);
dialog.setContentView(R.layout.custom_dialog);
dialog.setTitle("Dialog Title");
dialog.show();
回答by Aerrow
use this,
用这个，
dialog.setIcon(R.drawable.ic_launcher)
you need more customization means, refer this site http://www.androidhive.info/2011/09/how-to-show-alert-dialog-in-android/
你需要更多的定制手段，参考这个网站http://www.androidhive.info/2011/09/how-to-show-alert-dialog-in-android/
回答by Egor
dialog.setIcon(Drawable icon);
or
或者
dialog.setIcon(int resId);
Hope this helps.
希望这可以帮助。
回答by AMerle
May be you should use an AlertDialog. If you do, just
可能您应该使用 AlertDialog。如果你这样做，只要
AlertDialog.Builder b = new AlertDialog.Builder(yourContext);
b.setIcon(yourIcon);
/* add other properties thanks to b.set... */
b.create().show();
Hope this helps you.
希望这对你有帮助。
回答by Purkey
If you are using a viewPagerwith fragments, you can call a safeExit()from the onBackPressed()of the MainActivity. This is what I have done, I've never had any problems:
如果您使用的是viewPager与片段，您可以调用safeExit()从onBackPressed()的MainActivity。这就是我所做的，我从来没有遇到过任何问题：
@Override
public void onBackPressed() {
try {
if (getFragmentManager().getBackStackEntryCount() > 1) {
FragmentManager.BackStackEntry first = getFragmentManager().getBackStackEntryAt(0);
getFragmentManager().popBackStack(first.getId(), FragmentManager.POP_BACK_STACK_INCLUSIVE);
} else
safeExit();
} catch (Exception e) {
e.printStackTrace();
}
}
private void safeExit() {
new Builder(this).setIcon(R.drawable.ic_launcher).setTitle("Exit!").setMessage(
"Close Application?").setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
MainActivity.this.finish();
}
}).setNegativeButton("No", null).show();
}
