Dialog的四種用法
對話方塊Dialog在android基本用法很多種簡單介紹一下以下四種用法
Button btn1;
Button btn2;
Button btn3;
Button btn4;
final int DIALOG_ONE=1;
final int DIALOG_TWO=2;
btn1= (Button)findViewById(R.id.button1);
btn2= (Button)findViewById(R.id.button2);
btn3= (Button)findViewById(R.id.button3);
btn4= (Button)findViewById(R.id.button4);
第一種簡單的點選事件：
btn1.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Dialog dlg;//1定義Dialog對話方塊
Builder bd;/2/定義構建器
bd = new AlertDialog.Builder(DialogProjectActivity.this);
bd.setTitle("標題");
bd.setMessage("訊息");
bd.setPositiveButton("確定",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
dlg = bd.create()；//3建立構建器並將其內容賦給對話方塊
dlg.show();//4顯示對話方塊
}
});
第二個自定義函式實現：
btn2.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
MyDialog().show();
}
private Dialog MyDialog() {
// TODO Auto-generated method stub
Dialog dlg;
Builder bd;
bd = new AlertDialog.Builder(DialogProjectActivity.this);
bd.setTitle("標題");
bd.setMessage("訊息");
bd.setPositiveButton("確定",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
dlg = bd.create();
return dlg;
}
});
第三種重寫OncreateDialog(int)方法：
定義重寫
@Override
protected Dialog onCreateDialog(int id) {
// TODO Auto-generated method stub
Dialog dlg;
Builder bd = null;
switch(id)
{
case DIALOG_ONE:
bd = new AlertDialog.Builder(DialogProjectActivity.this);
bd.setTitle("標題");
bd.setMessage("訊息");
bd.setPositiveButton("確定",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
break;
case DIALOG_TWO:
bd = new AlertDialog.Builder(DialogProjectActivity.this);
bd.setTitle("標題");
bd.setMessage("訊息");
bd.setPositiveButton("確定",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
break;
}
dlg = bd.create();
dlg.show();
return dlg;
}
實現
btn3.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
showDialog(DIALOG_TWO);
}
});
第四種自定義實現類：
public class DialogTest extends Dialog {
public DialogTest(Context context) {
super(context);
// TODO Auto-generated constructor stub
}
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.dialog);
}
}
btn4.setOnClickListener(new OnClickListener() {public void onClick(View v) {
// TODO Auto-generated method stub
DialogTest dt = new DialogTest(DialogProjectActivity.this);
dt.show();
}
}) ;