在android中对话框是一种常见的操作，常见的对话框有下面几种：
以下是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="显示运行进度对话框" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="click5"
android:text="显示运行进度条对话框" />
</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：
显示运行进度对话框
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：
显示运行进度条对话框
public void click5(View view) {
final ProgressDialog dialog = new ProgressDialog(this);
dialog.setTitle("载入进度");
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：
最后补充一点假设是自己定义dialog的话假设你用的是
dialog.setContentView(R.layout.dialog_wait);那么就没有什么问题。
假设你是通过inflater来创建一个view
dialog.setContentView(view)
这样的方式来设置view的话。会遇到设置的dialog大小无效，view占满整个屏幕的情况。
这个时候就须要在代码中设置view的大小。
WindowManager.LayoutParams params=dialog.getWindow().getAttributes();
params.width=400;
params.height=400;
dialog.getWindow().setAttributes(params);自己定义对话框显示在底部
看到非常多应用在分享到第三方平台的时候。屏幕底部显示一个对话框
这样就须要自己定义Dialog的属性了，让dialog显示在屏幕的底部。
public static void showShareDialog(final Activity activity) {
final AlertDialog dialog = new AlertDialog.Builder(activity).create();
dialog.show();
View view = View.inflate(activity, R.layout.view_dialog_share, null);
TextView tvWeixinFriend = (TextView) view.findViewById(R.id.share_wexin);
tvWeixinFriend.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
ShareManager.getInstance().shareToWeixinFriend(activity);
}
});
TextView tvWeixinCircle = (TextView) view.findViewById(R.id.share_pyq);
tvWeixinCircle.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
ShareManager.getInstance().shareToWeixinCircle(activity);
}
});
TextView tvWeibo = (TextView) view.findViewById(R.id.share_weibo);
tvWeibo.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
ShareManager.getInstance().shareToWeibo(activity);
}
});
WindowManager.LayoutParams lp = dialog.getWindow().getAttributes();
lp.width = ViewGroup.LayoutParams.MATCH_PARENT;
lp.gravity = Gravity.BOTTOM;
dialog.getWindow().setAttributes(lp);
dialog.setContentView(view);
}以下是
view_dialog_share
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:background="@color/white" android:orientation="horizontal" android:paddingBottom="16dp" android:paddingTop="16dp"> <TextView android:id="@+id/share_wexin" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:drawablePadding="4dp" android:drawableTop="@drawable/icon_share_weixin_friend" android:gravity="center_horizontal" android:text="微信好友" /> <TextView android:id="@+id/share_pyq" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:drawablePadding="4dp" android:drawableTop="@drawable/icon_share_weixin_circle" android:gravity="center_horizontal" android:text="朋友圈" /> <TextView android:id="@+id/share_weibo" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:drawablePadding="4dp" android:drawableTop="@drawable/icon_share_weibo" android:gravity="center_horizontal" android:text="微博" /> </LinearLayout>