在源碼創建自定義dialog

第一中方法:

private void showDialog(){
    Context context = getActivity();//不是在activity類中寫的,所以需要獲取context對象
        View view = LayoutInflater.from(context).inflate(R.layout.high_opinion_dialog_layout,null,false);
        final AlertDialog dialog = new   AlertDialog.Builder(context).setView(view).create();

        Button btn_cancel_high_opion = view.findViewById(R.id.no);
        Button btn_agree_high_opion = view.findViewById(R.id.yes);
        RadioButton radioButton = view.findViewById(R.id.radioButton);
        
        radioButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Settings.System.putInt(context.getContentResolver(),"isShow",1);
            }
        });
        btn_cancel_high_opion.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
Settings.System.putInt(context.getContentResolver(),"vowifiIsChecked",0);
               //Settings.System.putInt(context.getContentResolver(),"isSwitch",0);
               isSwitch = true;
               mSwitchPref.setChecked(false);
              // updateWfcMode(context, false);
                dialog.dismiss();
            }
        });
        btn_agree_high_opion.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.dismiss();
            }
        });
                dialog.show();
            //此處設置位置窗體大小，我這裏設置爲了手機屏幕寬度的3/4  注意一定要在show方法調用後再寫設置窗口大小的代碼，否則不起效果會
            dialog.getWindow().setLayout(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);
           
    }

high_opinion_dialog_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"

    >

    <LinearLayout
        android:layout_width="270dp"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:background="@drawable/bg_dialog_white_color"
        android:orientation="vertical">


        <TextView
            android:id="@+id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="20dp"
            android:layout_marginTop="20dp"
            android:layout_marginRight="20dp"
            android:paddingTop="5dp"
            android:paddingBottom="5dp"
            android:text="Emergency calls via Wi-Fi Calling"
            android:textSize="16sp" />

        <TextView
            android:id="@+id/message"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_marginLeft="20dp"
            android:layout_marginRight="20dp"
            android:paddingTop="5dp"
            android:paddingBottom="5dp"
            android:text="Emergency calls are not possible via Wi-Fi Calling.the device switches automatically to a cellular network(2G/3G) to  place an emergency call.Emergency calls are only possible in areas with cellular coverage."
            android:textSize="14sp" />

    <RadioButton
            android:id="@+id/radioButton"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="20dp"
            android:layout_marginBottom="10dp"
            android:drawablePadding="4dp"
            android:text="Don't show again" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:layout_marginTop="14dp"
            android:orientation="horizontal">

            <Button
                android:id="@+id/no"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:background="@drawable/bg_dialog_btn_left"
                android:gravity="center"
                android:singleLine="true"
                android:text="Cancle"
                android:textAllCaps="false"
                android:textColor="#007"
                android:textSize="16sp" />

            <Button
                android:id="@+id/yes"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_gravity="center"
                android:layout_weight="1"
                android:background="@drawable/bg_dialog_btn_right"
                android:singleLine="true"
                android:text="Turn on"
                android:textAllCaps="false"
                android:textColor="#007"
                android:textSize="16sp" />

        </LinearLayout>

    </LinearLayout>

</RelativeLayout>

在代碼端引用:
showDialog();

效果圖:
第二種方法:
AndroidManifest.xml中進行註冊:

<activity android:name="com.android.settings.AlertDialogActivity"
            android:excludeFromRecents="true"
            android:theme="@style/myTransparent">
        </activity>

AlertDialogActivity.java的內容:

package com.android.systemui;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.Window;
import android.os.Build;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.graphics.Color;
import android.view.MotionEvent;


public class AlertDialogActivity extends Activity {
    
    static final String DEVICE_ROOT_TITLE = "Warning";
    static final String DEVICE_ROOT_MESSAGE = "This device has been root, there are security risks, please restore the boot";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            Window window = getWindow();
            window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS
                    | WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
            window.getDecorView().setSystemUiVisibility(
                    View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                            | View.SYSTEM_UI_FLAG_LAYOUT_STABLE
            );
            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
            window.setStatusBarColor(Color.TRANSPARENT);
        }
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        AlertDialog d = builder.create();
        d.setCancelable(false);
        d.setTitle(DEVICE_ROOT_TITLE);
        d.setMessage(DEVICE_ROOT_MESSAGE);
        d.setButton("ok", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                finish();
            }
        });
        d.show();
        setFinishOnTouchOutside(false);
    }
    
    @Override
    public void onBackPressed(){
        //do nothing
    }
}

color.xml

<color name="transparent">#0000</color>

styles.xml

<style name="myTransparent">
        <item name="android:windowBackground">@color/transparent</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowAnimationStyle">@android:style/Animation.Translucent</item>
    </style>

class KeyguardUpdateMonitor.java中使用:

import com.android.systemui.AlertDialogActivity;
import java.lang.reflect.Field;
import java.util.Map;
import java.io.File;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

else if (Intent.ACTION_BOOT_COMPLETED.equals(action)) {
                dispatchBootCompleted();
                
                Settings.System.putInt(mContext.getContentResolver(), "is_system_root_check_support", 1);
                if(isRoot()){
                    mHandler.postDelayed(new Runnable(){
                        public void run(){
                            Intent intent1 = new Intent();
                            intent1.setClass(context,AlertDialogActivity.class);
                            android.util.Log.d("zhangdi","111111111111111111111111111");
                            context.startActivity(intent1);
                        }
                    }, 10000);
                }
               
            }

......
 public boolean isRoot() {
        boolean root = false;
        try {
            String buildType = "";
            try {
                Class<?> cls = Class.forName("android.os.SystemProperties");
                Method m = cls.getDeclaredMethod("get",String.class,String.class);
                buildType = (String)m.invoke(null,"ro.build.type","");
            } catch (NoSuchMethodException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            } catch (InvocationTargetException e) {
                e.printStackTrace();
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            }
           
            if(!"eng".equals(buildType)){
                if ((!new File("/system/bin/su").exists()) && (!new File("/system/xbin/su").exists()) && (!new File("/system/sbin/su").exists())) {
                    root = false;
                } else {
                    root = true;
                }
            }else{
            }
        } catch (Exception e) {
        }
        return root;
    }

效果圖: