"Android" uses builder to create Alertdialog

Briefly

I feel very friendly when I call Alertdialog.builder directly in the activity to create a dialog without having to create a class alone. Consider that the actual Android app dialog need to complete the task is not too much, so this method should be able to achieve 90% of the demand, compared to the official Android document with serious to create a dialog box is simple, say not much, look at this mode it.

First, we need a dialog box layout

<?xml version= "1.0" encoding= "Utf-8"? ><linearlayout xmlns:android= "http://schemas.android.com/apk/res/ Android "xmlns:tools=" Http://schemas.android.com/tools "android:layout_width=" 256DP "android:layout_height=" 141DP "android:orientation=" vertical "> <linearlayout android:layout_width=" match_parent "Android:layo            ut_height= "92DP" android:gravity= "center" android:orientation= "vertical" > <textview Android:id= "@+id/dialog_title" android:layout_width= "wrap_content" android:layout_height= "Wrap_conte NT "android:layout_gravity=" center "android:layout_margintop=" 10DP "Android:linespacingex Tra= "3DP" android:linespacingmultiplier= "1.2" android:textcolor= "#333333" Android:textsiz            E= "15SP" android:visibility= "Gone"/> <textview android:id= "@+id/dialog_message" Android:layout_width= "Wrap_conTent "android:layout_height=" wrap_content "android:layout_gravity=" center "android:layout _marginleft= "15DP" android:layout_marginright= "15DP" android:layout_margintop= "3DP" Andro            Id:linespacingextra= "3DP" android:linespacingmultiplier= "1.2" android:textcolor= "#333333"        Android:textsize= "15sp"/> </LinearLayout> <linearlayout android:layout_width= "Match_parent" android:layout_height= "40DP" android:gravity= "center" android:orientation= "Horizontal" > </linea Rlayout></linearlayout>

Locate the layout in the resource file using the Getlayoutinflater (). Inflate () method

LinearLayout layout=(LinearLayout) getLayoutInflater().inflate(R.layout.dialog,null);

By the way, set R.string.dlg_title the text, and R.string.dlg_message is the string resources to add their own items

TextView dialogTile=layout.findViewById(R.id.dialog_title);TextView dialogMessage=layout.findViewById(R.id.dialog_message);dialogTile.setText(R.string.dlg_title);dialogMessage.setText(R.string.dlg_message);

is here to add

Build this dialog box

 new AlertDialog.Builder(MainActivity.this).setView(layout)                        .setPositiveButton("确定", new DialogInterface.OnClickListener() {                            @Override                            public void onClick(DialogInterface dialogInterface, int i) {                                /*                                点击确定按钮要做的事                                */                            }                        })                        .setNegativeButton("取消",null)//因为取消键只是关闭，所以不设监听                        .setCancelable(true)//可以点对话框外部关闭对话框                        .create()                        .show();

The above three pieces of code are written directly in the activity, do not create a new class, write it is also very short, feel good.

"Android" uses builder to create Alertdialog