Android 常見的四種對話框實例講解

1、對話框通知(Dialog Notification)

當你的應用需要顯示一個進度條或需要用戶對信息進行確認時，可以使用對話框來完成。

下面代碼將打開一個如圖所示的對話框：

public void click1(View view) {
AlertDialog.Builder builder = new Builder(this);
builder.setTitle("工學1號館");
builder.setIcon(R.drawable.ic_launcher);
builder.setMessage("浏覽wuyudong的博客?");
builder.setPositiveButton("確定", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Uri uri = Uri.parse("http://www.wuyudong.com/");// 打開鏈接
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
}
});
builder.setNegativeButton("取消", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
AlertDialog dialog = builder.create();
dialog.show();
}

2、創建帶單選項列表的對話框

public void click2(View view) {
AlertDialog.Builder builder = new Builder(this);
builder.setTitle("單選對話框");
final String[] items = new String[] { "java", ".net", "php" };
builder.setSingleChoiceItems(items, 0, new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, items[which] + "被點擊了", 0)
.show();
}
});
builder.show();
}

3、創建帶多選項列表的對話框

public void click3(View view) {
AlertDialog.Builder builder = new Builder(this);
builder.setTitle("多選對話框");
final String[] items = new String[] { "java", ".net", "php", "C++" };
builder.setMultiChoiceItems(items, new boolean[] { true, false, false,
true }, new OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which,
boolean isChecked) {
Toast.makeText(MainActivity.this, items[which] + isChecked, 0)
.show();
}
});
builder.setNegativeButton("取消", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder.show();
}

4、進度對話框(ProgressDialog)

使用代碼ProgressDialog.show(ProgressDialogActivity.this, "請稍等", "數據正在加載中...", true);創建並顯示一個進度對話框。
調用setProgressStyle()方法設置進度對話框風格。有兩種風格：

ProgressDialog.STYLE_SPINNER 旋體進度條風格 (為默認風格)
ProgressDialog.STYLE_HORIZONTAL 橫向進度條風格
public void click4(View view) {
ProgressDialog pd = new ProgressDialog(this);
pd.setTitle("提醒");
pd.setMessage("正在加載中......");
pd.show();
}

下面的代碼實現橫向進度條風格：

public void click5(View view) {
final ProgressDialog pd = new ProgressDialog(this);
pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pd.setMax(100);
pd.show();
new Thread() {
public void run() {
for (int i = 0; i < 100; i++) {
pd.setProgress(i);
try {
Thread.sleep(20);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
pd.dismiss();
};
}.start();
} 

以上所述是小編給大家介紹的Android 常見的四種對話框實例講解，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對本站網站的支持！