先上图，不上图的程序员不是好程序员：
![webp]()
看了效果下面该看代码了
1、MainActivity的xml内代码
<?xml version="1.0" encoding="utf-8"?>
<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:id="@+id/btn_two"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="最普通的 dialog"
android:textAllCaps="false" />
<Button
android:id="@+id/btn_three"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="三个按钮的 dialog"
android:textAllCaps="false" />
<Button
android:id="@+id/btn_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="列表 dialog"
android:textAllCaps="false" />
<Button
android:id="@+id/btn_multi_select"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="多选 dialog"
android:textAllCaps="false" />
<Button
android:id="@+id/btn_single_select"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="单选 dialog"
android:textAllCaps="false" />
<Button
android:id="@+id/btn_waiting"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="等待 dialog"
android:textAllCaps="false" />
<Button
android:id="@+id/btn_loading"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="加载 dialog"
android:textAllCaps="false" />
<Button
android:id="@+id/btn_input"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="输入 dialog"
android:textAllCaps="false" />
<Button
android:id="@+id/btn_my_style"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="自定义 dialog"
android:textAllCaps="false" />
</LinearLayout>
2、MainActivity的java文件内代码即逻辑代码
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private AlertDialog.Builder builder;
private ProgressDialog progressDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btnTwo = findViewById(R.id.btn_two);
Button btnThree = findViewById(R.id.btn_three);
Button btnList = findViewById(R.id.btn_list);
Button btnMultiSelect = findViewById(R.id.btn_multi_select);
Button btnSingleSelect = findViewById(R.id.btn_single_select);
Button btnWaiting = findViewById(R.id.btn_waiting);
Button btnLoading = findViewById(R.id.btn_loading);
Button btnInput = findViewById(R.id.btn_input);
Button btnMyStyle = findViewById(R.id.btn_my_style);
btnTwo.setOnClickListener(this);
btnThree.setOnClickListener(this);
btnList.setOnClickListener(this);
btnMultiSelect.setOnClickListener(this);
btnSingleSelect.setOnClickListener(this);
btnWaiting.setOnClickListener(this);
btnLoading.setOnClickListener(this);
btnInput.setOnClickListener(this);
btnMyStyle.setOnClickListener(this);
}
@Override
public void onClick(View view) {
int id = view.getId();
switch (id) {
case R.id.btn_two://最普通dialog
showTwo();
break;
case R.id.btn_three://三个按钮dialog
showThree();
break;
case R.id.btn_list://列表样式dialog
showList();
break;
case R.id.btn_multi_select://多选dialog
showMultiSelect();
break;
case R.id.btn_single_select://单选dialog
showSingSelect();
break;
case R.id.btn_waiting://等待dialog
showWaiting();
break;
case R.id.btn_loading://加载进度dialog
showLoading();
break;
case R.id.btn_input://输入框dialog
showInput();
break;
case R.id.btn_my_style://自定义dialog
showMyStyle();
break;
default:
}
}
/**
* 两个按钮的 dialog
*/
private void showTwo() {
builder = new AlertDialog.Builder(this).setIcon(R.mipmap.ic_launcher).setTitle("最普通dialog")
.setMessage("我是最简单的dialog").setPositiveButton("确定（积极）", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
//ToDo: 你想做的事情
Toast.makeText(MainActivity.this, "确定按钮", Toast.LENGTH_LONG).show();
}
}).setNegativeButton("取消（消极）", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
//ToDo: 你想做的事情
Toast.makeText(MainActivity.this, "关闭按钮", Toast.LENGTH_LONG).show();
dialogInterface.dismiss();
}
});
builder.create().show();
}
/**
* 三个按钮的 dialog
*/
private void showThree() {
builder = new AlertDialog.Builder(this).setIcon(R.mipmap.ic_launcher).setTitle("三个按钮dialog")
.setMessage("三个按钮dialog").setPositiveButton("确定（积极）", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
//ToDo: 你想做的事情
Toast.makeText(MainActivity.this, "确定按钮", Toast.LENGTH_LONG).show();
}
}).setNeutralButton("你猜（中立）", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(MainActivity.this, "你猜按钮", Toast.LENGTH_LONG).show();
}
}).setNegativeButton("取消（消极）", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
//ToDo: 你想做的事情
Toast.makeText(MainActivity.this, "关闭按钮", Toast.LENGTH_LONG).show();
dialogInterface.dismiss();
}
});
builder.create().show();
}
/**
* 列表 dialog
*/
private void showList() {
final String[] items = {"item 1", "item 2", "item 3", "item 4", "item 5", "item 6"};
builder = new AlertDialog.Builder(this).setIcon(R.mipmap.ic_launcher)
.setTitle("列表dialog")
.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(MainActivity.this, "你点击的内容为： " + items[i], Toast.LENGTH_LONG).show();
}
});
builder.create().show();
}
/**
* 多选 dialog
*/
private void showMultiSelect() {
final List<Integer> choice = new ArrayList<>();
final String[] items = {"多选1", "多选2", "多选3", "多选4", "多选5", "多选6"};
//默认都未选中
boolean[] isSelect = {false, false, false, false, false, false};
builder = new AlertDialog.Builder(this).setIcon(R.mipmap.ic_launcher)
.setTitle("多选dialog")
.setMultiChoiceItems(items, isSelect, new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i, boolean b) {
if (b) {
choice.add(i);
} else {
choice.remove(i);
}
}
}).setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
StringBuilder str = new StringBuilder();
for (int j = 0; j < choice.size(); j++) {
str.append(items[choice.get(j)]);
}
Toast.makeText(MainActivity.this, "你选择了" + str, Toast.LENGTH_LONG).show();
}
});
builder.create().show();
}
private int choice;
/**
* 单选 dialog
*/
private void showSingSelect() {
//默认选中第一个
final String[] items = {"单选1", "单选2", "单选3", "单选4", "单选5", "单选6"};
choice = -1;
builder = new AlertDialog.Builder(this).setIcon(R.mipmap.ic_launcher).setTitle("单选列表")
.setSingleChoiceItems(items, 0, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
choice = i;
}
}).setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
if (choice != -1) {
Toast.makeText(MainActivity.this, "你选择了" + items[choice], Toast.LENGTH_LONG).show();
}
}
});
builder.create().show();
}
/**
* 圆圈加载进度的 dialog
*/
private void showWaiting() {
progressDialog = new ProgressDialog(this);
progressDialog.setIcon(R.mipmap.ic_launcher);
progressDialog.setTitle("加载dialog");
progressDialog.setMessage("加载中...");
progressDialog.setIndeterminate(true);// 是否形成一个加载动画 true表示不明确加载进度形成转圈动画 false 表示明确加载进度
progressDialog.setCancelable(false);//点击返回键或者dialog四周是否关闭dialog true表示可以关闭 false表示不可关闭
progressDialog.show();
}
/**
* 带有进度的 dialog
*/
private void showLoading() {
final int MAX_VALUE = 100;
progressDialog = new ProgressDialog(this);
progressDialog.setProgress(0);
progressDialog.setTitle("带有加载进度dialog");
progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressDialog.setMax(MAX_VALUE);
progressDialog.show();
new Thread(new Runnable() {
@Override
public void run() {
int progress = 0;
while (progress < MAX_VALUE) {
try {
Thread.sleep(100);
progress++;
progressDialog.setProgress(progress);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
//加载完毕自动关闭dialog
progressDialog.cancel();
}
}).start();
}
/**
* 一个输入框的 dialog
*/
private void showInput() {
final EditText editText = new EditText(this);
builder = new AlertDialog.Builder(this).setTitle("输入框dialog").setView(editText)
.setPositiveButton("读取输入框内容", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(MainActivity.this, "输入内容为：" + editText.getText().toString()
, Toast.LENGTH_LONG).show();
}
});
builder.create().show();
}
/**
* 原生自定义 dialog
*/
private void showMyStyle() {
@SuppressLint("InflateParams") View view = LayoutInflater.from(this).inflate(R.layout.layout_test, null);
final EditText etUsername = view.findViewById(R.id.et_username);
final EditText etPassword = view.findViewById(R.id.et_password);
builder = new AlertDialog.Builder(this).setView(view).setTitle("自定义dialog——登录").setIcon(R.mipmap.ic_launcher)
.setPositiveButton("登录", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(MainActivity.this, "账号： " + etUsername.getText().toString() + " 密码： " + etPassword.getText().toString()
, Toast.LENGTH_LONG).show();
}
});
builder.create().show();
}
}
3、介绍一些好用的第三方dialog库
1、material-dialogs
2、FlycoDialog_Master
