Dialog使用范例

Dialog是APP开发中使用频率非常高，也非常简单的一个组件，这里针对Android原声Dialog写了一个详细的Demo，以便以后使用。

布局文件 :

<?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>

MainActivity:

import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

private AlertDialog.Builder builder;
private ProgressDialog progressDialog;
private static final String TAG = "MainActivity";

@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);

    Log.e(TAG, "onCreate" );

}


@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
            showMyDialog();
            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) {
                    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) {
                    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) {
                    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) {
                    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(choice.indexOf(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(true);//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 showMyDialog() {
    MyDiaLog myDiaLog = new MyDiaLog(MainActivity.this);
    myDiaLog.show();
}

@Override
protected void onStart() {
    super.onStart();
    Log.e(TAG, "onStart" );
}

@Override
protected void onResume() {
    super.onResume();
    Log.e(TAG, "onResume" );
}

@Override
protected void onPause() {
    super.onPause();
    Log.e(TAG, "onPause" );
}

@Override
protected void onStop() {
    super.onStop();
    Log.e(TAG, "onStop" );
}

@Override
protected void onDestroy() {
    super.onDestroy();
    Log.e(TAG, "onDestroy" );
}
}

MyDialog :

 import android.app.Dialog;
 import android.content.Context;


 import androidx.annotation.NonNull;

 public class MyDiaLog extends Dialog{
 public MyDiaLog(@NonNull Context context) {
    super(context);
    setContentView(R.layout.dialog_layout);
 }
}

dialog_layout :

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:gravity="center"
android:background="@drawable/timg"
android:layout_width="match_parent"
android:layout_height="match_parent">

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="120dp"
    android:layout_marginBottom="200dp"
    android:text="@string/picture1"
    android:textColor="#FF0000"
    android:textSize="30sp" />

 </LinearLayout>
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