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Android啟動(dòng)頁設(shè)置及動(dòng)態(tài)權(quán)限跳轉(zhuǎn)問題解決

 更新時(shí)間:2022年04月18日 08:50:55   作者:zstar-_  
在我遇到這個(gè)實(shí)際問題之前,我一直認(rèn)為啟動(dòng)頁的作用是美化產(chǎn)品,提升軟件逼格。但實(shí)際上,它更重要的是起到了一個(gè)攔截器的作用,這篇文章主要介紹了Android啟動(dòng)頁設(shè)置以及動(dòng)態(tài)權(quán)限跳轉(zhuǎn),需要的朋友可以參考下

啟動(dòng)頁的作用

在我遇到這個(gè)實(shí)際問題之前,我一直認(rèn)為啟動(dòng)頁的作用是美化產(chǎn)品,提升軟件逼格。但實(shí)際上,它更重要的是起到了一個(gè)攔截器的作用。比如,當(dāng)App首頁需要?jiǎng)討B(tài)得從網(wǎng)上加載數(shù)據(jù)時(shí),就必須請求網(wǎng)絡(luò)權(quán)限,如果沒有啟動(dòng)頁,用戶將直接看到一堆空數(shù)據(jù)。因此,啟動(dòng)頁主要有兩個(gè)作用:1、攔截用戶訪問,只有用戶授予必要的權(quán)限才準(zhǔn)入;2、為主頁動(dòng)態(tài)數(shù)據(jù)加載爭取時(shí)間。

啟動(dòng)頁跳轉(zhuǎn)

在提權(quán)限之前,首先把啟動(dòng)頁延時(shí)跳轉(zhuǎn)解決。通過下面的代碼,可以實(shí)現(xiàn)延遲2秒鐘跳轉(zhuǎn)。

new android.os.Handler().postDelayed(new Runnable() {
         @Override
         public void run() {
             Intent mainIntent = new Intent(Splash.this,MainActivity.class);
             Splash.this.startActivity(mainIntent);
             Splash.this.finish();
         }
     },2000);

另外注意把啟動(dòng)頁的這個(gè)Activity在Manifests中設(shè)置成默認(rèn)啟動(dòng)頁面。

<activity android:name=".Splash"
    android:theme="@style/ThemeSplash">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

啟動(dòng)頁的xml使用默認(rèn)的頁面即可,這里通過引入主題的方式來設(shè)置啟動(dòng)頁無標(biāo)題欄,并更換底圖。
在styles中添加:

<style name="ThemeSplash" parent="Theme.AppCompat.Light.NoActionBar">
        <!--<item name="android:background">@mipmap/ic_launcher</item>-->
        <item name="android:windowBackground">@drawable/qidong</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowFullscreen">true</item>
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
    </style>

動(dòng)態(tài)權(quán)限獲取

首先在Manifests中配置需要的權(quán)限。

 <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <!-- 這個(gè)權(quán)限用于訪問GPS定位 -->
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <!-- 用于訪問wifi網(wǎng)絡(luò)信息,wifi信息會(huì)用于進(jìn)行網(wǎng)絡(luò)定位 -->
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> <!-- 獲取運(yùn)營商信息,用于支持提供運(yùn)營商信息相關(guān)的接口 -->
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <!-- 這個(gè)權(quán)限用于獲取wifi的獲取權(quán)限,wifi信息會(huì)用來進(jìn)行網(wǎng)絡(luò)定位 -->
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" /> <!-- 寫入擴(kuò)展存儲(chǔ),向擴(kuò)展卡寫入數(shù)據(jù),用于寫入離線定位數(shù)據(jù) -->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <!-- 訪問網(wǎng)絡(luò),網(wǎng)絡(luò)定位需要上網(wǎng) -->
    <uses-permission android:name="android.permission.INTERNET" />

然后在啟動(dòng)頁的Java文件中,創(chuàng)建權(quán)限列表:

 String[] permissions = new String[]{
            Manifest.permission.ACCESS_COARSE_LOCATION, // GPS定位權(quán)限
            Manifest.permission.ACCESS_FINE_LOCATION,  // 訪問wifi網(wǎng)絡(luò)權(quán)限
            Manifest.permission.ACCESS_WIFI_STATE,    // 獲取運(yùn)營商權(quán)限
            Manifest.permission.ACCESS_NETWORK_STATE,    // 獲取wifi定位權(quán)限
            Manifest.permission.CHANGE_WIFI_STATE,      // 存儲(chǔ)權(quán)限
            Manifest.permission.WRITE_EXTERNAL_STORAGE,    // 訪問網(wǎng)絡(luò)權(quán)限
            Manifest.permission.INTERNET        // 網(wǎng)絡(luò)權(quán)限
    };

設(shè)定一個(gè)函數(shù)檢查權(quán)限,全部通過才放行(這個(gè)條件可根據(jù)實(shí)際情況修改)

private void checkPermissions(){
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            int q1 = ContextCompat.checkSelfPermission(getContext(), permissions[0]);
            int q2 = ContextCompat.checkSelfPermission(getContext(), permissions[1]);
            int q3 = ContextCompat.checkSelfPermission(getContext(), permissions[2]);
            int q4 = ContextCompat.checkSelfPermission(getContext(), permissions[3]);
            int q5 = ContextCompat.checkSelfPermission(getContext(), permissions[4]);
            int q6 = ContextCompat.checkSelfPermission(getContext(), permissions[5]);
            int q7 = ContextCompat.checkSelfPermission(getContext(), permissions[6]);
            // 權(quán)限是否已經(jīng)授權(quán) GRANTED---授權(quán)  DINIED---拒絕
            if (q1 != PackageManager.PERMISSION_GRANTED ||
                    q2 != PackageManager.PERMISSION_GRANTED ||
                    q3 != PackageManager.PERMISSION_GRANTED ||
                    q4 != PackageManager.PERMISSION_GRANTED ||
                    q5 != PackageManager.PERMISSION_GRANTED ||
                    q6 != PackageManager.PERMISSION_GRANTED ||
                    q7 != PackageManager.PERMISSION_GRANTED) {
                // 如果沒有授予該權(quán)限,就去提示用戶請求
                startRequestPermission();
            }
            else{
                //獲取權(quán)限成功,跳轉(zhuǎn)
                new android.os.Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        Intent mainIntent = new Intent(Splash.this,MainActivity.class);
                        Splash.this.startActivity(mainIntent);
                        Splash.this.finish();
                    }
                },2000);
            }
        }
    }

如果用戶點(diǎn)擊拒絕,則引導(dǎo)用戶進(jìn)行權(quán)限請求。

 private void startRequestPermission() {
        ActivityCompat.requestPermissions(this, permissions, 321);
    }
@Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == 321) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                if (grantResults[0] != PackageManager.PERMISSION_GRANTED) {
                    //如果沒有獲取權(quán)限,那么可以提示用戶去設(shè)置界面--->應(yīng)用權(quán)限開啟權(quán)限
                    Toast toast = Toast.makeText(this, "請到設(shè)置界面授予權(quán)限再啟動(dòng)", Toast.LENGTH_LONG);
                    toast.setGravity(Gravity.CENTER, 0, 0);
                    toast.show();
                } else {
                    //獲取權(quán)限成功,跳轉(zhuǎn)
                    new android.os.Handler().postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            Intent mainIntent = new Intent(Splash.this,MainActivity.class);
                            Splash.this.startActivity(mainIntent);
                            Splash.this.finish();
                        }
                    },2000);
                }
            }
        }
    }

完整啟動(dòng)頁控制程序

Splash.java

package com.baidu.location.demo;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.content.Intent;
import android.view.Gravity;
import android.widget.Toast;
import static com.baidu.mapapi.BMapManager.getContext;
public class Splash extends AppCompatActivity {
    String[] permissions = new String[]{
            Manifest.permission.ACCESS_COARSE_LOCATION, // GPS定位權(quán)限
            Manifest.permission.ACCESS_FINE_LOCATION,  // 訪問wifi網(wǎng)絡(luò)權(quán)限
            Manifest.permission.ACCESS_WIFI_STATE,    // 獲取運(yùn)營商權(quán)限
            Manifest.permission.ACCESS_NETWORK_STATE,    // 獲取wifi定位權(quán)限
            Manifest.permission.CHANGE_WIFI_STATE,      // 存儲(chǔ)權(quán)限
            Manifest.permission.WRITE_EXTERNAL_STORAGE,    // 訪問網(wǎng)絡(luò)權(quán)限
            Manifest.permission.INTERNET        // 網(wǎng)絡(luò)權(quán)限
    };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_splash);
        checkPermissions();
    }
    private void checkPermissions(){
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            int q1 = ContextCompat.checkSelfPermission(getContext(), permissions[0]);
            int q2 = ContextCompat.checkSelfPermission(getContext(), permissions[1]);
            int q3 = ContextCompat.checkSelfPermission(getContext(), permissions[2]);
            int q4 = ContextCompat.checkSelfPermission(getContext(), permissions[3]);
            int q5 = ContextCompat.checkSelfPermission(getContext(), permissions[4]);
            int q6 = ContextCompat.checkSelfPermission(getContext(), permissions[5]);
            int q7 = ContextCompat.checkSelfPermission(getContext(), permissions[6]);
            // 權(quán)限是否已經(jīng)授權(quán) GRANTED---授權(quán)  DINIED---拒絕
            if (q1 != PackageManager.PERMISSION_GRANTED ||
                    q2 != PackageManager.PERMISSION_GRANTED ||
                    q3 != PackageManager.PERMISSION_GRANTED ||
                    q4 != PackageManager.PERMISSION_GRANTED ||
                    q5 != PackageManager.PERMISSION_GRANTED ||
                    q6 != PackageManager.PERMISSION_GRANTED ||
                    q7 != PackageManager.PERMISSION_GRANTED) {
                // 如果沒有授予該權(quán)限,就去提示用戶請求
                startRequestPermission();
            }
            else{
                //獲取權(quán)限成功,跳轉(zhuǎn)
                new android.os.Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        Intent mainIntent = new Intent(Splash.this,MainActivity.class);
                        Splash.this.startActivity(mainIntent);
                        Splash.this.finish();
                    }
                },2000);
            }
        }
    }
    private void startRequestPermission() {
        ActivityCompat.requestPermissions(this, permissions, 321);
    }
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == 321) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                if (grantResults[0] != PackageManager.PERMISSION_GRANTED) {
                    //如果沒有獲取權(quán)限,那么可以提示用戶去設(shè)置界面--->應(yīng)用權(quán)限開啟權(quán)限
                    Toast toast = Toast.makeText(this, "請到設(shè)置界面授予權(quán)限再啟動(dòng)", Toast.LENGTH_LONG);
                    toast.setGravity(Gravity.CENTER, 0, 0);
                    toast.show();
                } else {
                    //獲取權(quán)限成功,跳轉(zhuǎn)
                    new android.os.Handler().postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            Intent mainIntent = new Intent(Splash.this,MainActivity.class);
                            Splash.this.startActivity(mainIntent);
                            Splash.this.finish();
                        }
                    },2000);
                }
            }
        }
    }
}

到此這篇關(guān)于Android:啟動(dòng)頁設(shè)置以及動(dòng)態(tài)權(quán)限跳轉(zhuǎn)的文章就介紹到這了,更多相關(guān)android啟動(dòng)頁動(dòng)態(tài)權(quán)限跳轉(zhuǎn)內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家!

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