在android中对话框是一种常见的操作，常见的对话框有以下几种：
下面是xml布局文件：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity" >
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="click1"
android:text="显示通知对话框" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="click2"
android:text="显示单选对话框" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="click3"
android:text="显示多选对话框" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="click4"
android:text="显示进度对话框" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="click5"
android:text="显示进度条对话框" />
</LinearLayout>
实现代码：
显示对话框
public void click1(View view) {
AlertDialog.Builder builder = new Builder(this);
builder.setTitle("显示对话框");
builder.setIcon(R.drawable.ic_launcher);
builder.setMessage("你确定吗？");
builder.setPositiveButton("确定", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, "确定被点击了", Toast.LENGTH_LONG)
.show();
}
});
builder.setNegativeButton("取消", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
builder.show();
}
显示效果：
显示单选对话框
public void click2(View view) {
AlertDialog.Builder builder = new Builder(this);
builder.setTitle("单选对话框");
final String[] items = new String[] { "条目1", "条目2", "条目3" };
builder.setSingleChoiceItems(items, 1, new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, items[which] + "被选中了",
Toast.LENGTH_LONG).show();
dialog.dismiss();
}
});
builder.show();
}
显示效果：
显示多选对话框
public void click3(View view) {
AlertDialog.Builder builder = new Builder(this);
builder.setTitle("显示多选对话框");
final String[] items = new String[] { "条目1", "条目2", "条目3", "条目4" };
builder.setMultiChoiceItems(items, new boolean[] { true, false, false,
true }, new OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which,
boolean isChecked) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, items[which] + isChecked,
Toast.LENGTH_LONG).show();
}
});
builder.setNegativeButton("取消", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
builder.show();
}
显示效果：
显示进度对话框
public void click4(View view) {
ProgressDialog dialog = new ProgressDialog(this);
dialog.setTitle("提醒");
dialog.setMessage("正在上传中");
dialog.show();
}
显示效果：
显示进度条对话框
public void click5(View view) {
final ProgressDialog dialog = new ProgressDialog(this);
dialog.setTitle("加载进度");
dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
dialog.setMax(100);
dialog.show();
new Thread() {
public void run() {
for (int i = 0; i < 100; i++) {
dialog.setProgress(i);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
dialog.dismiss();
};
}.start();
}
显示效果：