Android 中AlterDialog使用

Android 中AlterDialog使用，AlterDialog的使用分為兩種，一種是直接使用，一種是自己設計一個Layout，然後當做Dialog顯示出來。

1、定義兩個Button，一個用來顯示AlterDialog，一個顯示自訂的AlterDialog。

private Button bt1;private Button bt2;

 註冊事件

protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);bt1 = (Button)this.findViewById(R.id.button1);bt1.setOnClickListener(new OnClickEvent());bt2 = (Button)this.findViewById(R.id.button2);bt2.setOnClickListener(new OnClickEvent());}

 2、bt1顯示普通的AlterDialog，bt2顯示自己定義的AlterDialog。

class OnClickEvent implements OnClickListener {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubif(v == bt1){ShowDialog(MainActivity.this);}if(v == bt2){showDialog_Layout(MainActivity.this);}}}

 3、ShowDialog方法顯示帶有三個按鈕的Dialog。分別為OK，Cancle，Reset。以及三個Button的單擊事件。

private void ShowDialog(Context context){AlertDialog.Builder build = new AlertDialog.Builder(context);build.setIcon(R.drawable.ic_launcher);build.setTitle("Dialog Title");build.setMessage("Dialog Message");build.setPositiveButton("OK", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubsetTitle("You click OK");}});build.setNeutralButton("Reset", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubsetTitle("You click Reset");}});build.setNegativeButton("Cancle", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubsetTitle("You click Cancle");}});build.show();}

 showDialog_Layout顯示自己定義的AlterDialog，定義了兩個按鈕，分別為OK和Cancle，以及各自的單擊事件。

private void showDialog_Layout(Context context) {  LayoutInflater inflater = LayoutInflater.from(this);final View view = inflater.inflate(R.layout.mydialoglayout, null);final EditText txt = (EditText)view.findViewById(R.id.editText1);AlertDialog.Builder build = new AlertDialog.Builder(context);build.setIcon(R.drawable.ic_launcher);build.setTitle("Dialog Title");build.setCancelable(false); build.setIcon(R.drawable.ic_launcher);build.setView(view);        build.setPositiveButton("Ok", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubsetTitle(txt.getText());}});        build.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubsetTitle("");}});        build.show();}

 自訂的mydialoglayout.xml的UI代碼為：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <EditText        android:id="@+id/editText1"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:ems="10" >        <requestFocus />    </EditText></LinearLayout>

 這個UI是自訂的，當然可以定義的更複雜。上面就放了一個EditText。