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20_Android中apk安装器，通过WebView来load进一个页面,Android通知，程序退出自动杀死进程，通过输入包名的方式杀死进程

發(fā)布時(shí)間：2024/9/27 Android 55 豆豆

生活随笔收集整理的這篇文章主要介紹了 20_Android中apk安装器，通过WebView来load进一个页面,Android通知，程序退出自动杀死进程，通过输入包名的方式杀死进程小編覺(jué)得挺不錯(cuò)的,現(xiàn)在分享給大家,幫大家做個(gè)參考.

場(chǎng)景：實(shí)現(xiàn)安裝一個(gè)apk應(yīng)用程序的過(guò)程。界面如下：

編寫如下應(yīng)用，應(yīng)用結(jié)構(gòu)如下：

<RelativeLayout 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"

??? tools:context=".MainActivity" >

???

??? <EditText

??????? android:hint="請(qǐng)輸入安裝apk文件的路徑"

???????? android:layout_width="fill_parent"

??????? android:layout_height="wrap_content"

??????? android:id="@+id/et_path"/>

???

??? <Button

??????? android:onClick="click"

??????? android:layout_width="wrap_content"

??????? android:layout_height="wrap_content"

??????? android:layout_centerHorizontal="true"

??????? android:layout_centerVertical="true"

??????? android:text="安裝"/>

???

</RelativeLayout>

MainActivity的內(nèi)容如下：

package com.itheima.apkinstaller;

import java.io.File;

import android.app.Activity;

import android.content.Intent;

import android.net.Uri;

import android.os.Bundle;

import android.view.View;

import android.widget.EditText;

public class MainActivity extends Activity {

??? private EditText et_path;

???

??? @Override

??? protected void onCreate(Bundle savedInstanceState) {

?????? super.onCreate(savedInstanceState);

?????? setContentView(R.layout.activity_main);

?????? et_path = (EditText) findViewById(R.id.et_path);

??? }

??? public void click(View view) {

?????? String path = et_path.getText().toString().trim();

//????? <intent-filter>

//????? <action android:name="android.intent.action.VIEW" />

//????? <category android:name="android.intent.category.DEFAULT" />

//????? <data android:scheme="content" />

//????? <data android:scheme="file" />

//????? <data android:mimeType="application/vnd.android.package-archive" />

//????? </intent-filter>

??????

?????? Intent intent = new Intent();

?????? intent.setAction("android.intent.action.VIEW");

?????? intent.addCategory("android.intent.category.DEFAULT");

?????? intent.setDataAndType(Uri.fromFile(new File(path)), "application/vnd.android.package-archive");

?????? startActivity(intent);

??? }

}

Android清單文件內(nèi)容如下：

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

??? package="com.itheima.apkinstaller"

??? android:versionCode="1"

??? android:versionName="1.0" >

??? <uses-sdk

??????? android:minSdkVersion="8"

??????? android:targetSdkVersion="19" />

??? <application

??????? android:allowBackup="true"

??????? android:icon="@drawable/ic_launcher"

??????? android:label="@string/app_name"

??????? android:theme="@style/AppTheme" >

??????? <activity

??????????? android:name="com.itheima.apkinstaller.MainActivity"

??????????? android:label="@string/app_name" >

??????????? <intent-filter>

??????????????? <action android:name="android.intent.action.MAIN" />

??????????????? <category android:name="android.intent.category.LAUNCHER" />

??????????? </intent-filter>

???? ???</activity>

??? </application>

</manifest>

1 場(chǎng)景：通過(guò)WebView加載一個(gè)頁(yè)面，程序運(yùn)行后的界面如下（注意：下面的頁(yè)面是通過(guò)WebView通過(guò)load的方式加載進(jìn)去的）：

程序案例結(jié)構(gòu)如下：

2? 編寫activity_main.xml布局：

<RelativeLayout 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"

??? tools:context=".MainActivity" >

???

??? <WebView

??????? android:layout_width="fill_parent"

??????? android:layout_height="fill_parent"

??????? android:id="@+id/wv"/>

???

</RelativeLayout>

3 Android的清單文件：

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

??? package="com.itheima.htmlui"

??? android:versionCode="1"

??? android:versionName="1.0" >

??? <uses-sdk

??????? android:minSdkVersion="8"

??????? android:targetSdkVersion="19" />

<uses-permission android:name="android.permission.INTERNET"/>

???

??? <application

??????? android:allowBackup="true"

??????? android:icon="@drawable/ic_launcher"

??????? android:label="@string/app_name"

??????? android:theme="@style/AppTheme" >

??????? <activity

??????????? android:name="com.itheima.htmlui.MainActivity"

??????????? android:label="@string/app_name" >

??????????? <intent-filter>

??????????????? <action android:name="android.intent.action.MAIN" />

??????????????? <category android:name="android.intent.category.LAUNCHER" />

??????????? </intent-filter>

??????? </activity>

??? </application>

</manifest>

1 Android通知，界面效果：

點(diǎn)擊”點(diǎn)擊顯示通知”，發(fā)現(xiàn)上方出現(xiàn)了一個(gè)紅色小人的通知

點(diǎn)擊”新版點(diǎn)擊顯示通知”，將通知滑動(dòng)顯示查看，效果如下：

程序案例結(jié)構(gòu)如下：

2 編寫布局文件：activity_main.xml

<RelativeLayout 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"

??? tools:context=".MainActivity" >

??? <Button

??????? android:onClick="click"

??????? android:layout_width="wrap_content"

??????? android:layout_height="wrap_content"

??????? android:layout_centerHorizontal="true"

??????? android:layout_centerVertical="true"

??????? android:text="點(diǎn)擊顯示通知" />

??? <Button

??????? android:onClick="click2"

??????? android:layout_width="wrap_content"

??????? android:layout_height="wrap_content"

??????? android:layout_centerHorizontal="true"

??????? android:text="新版點(diǎn)擊顯示通知" />

???

</RelativeLayout>

3 編寫MainActivity，代碼如下：

package com.itheima.notification;

import android.annotation.SuppressLint;

import android.app.Notification;

import android.app.NotificationManager;

import android.app.PendingIntent;

import android.content.Intent;

import android.graphics.BitmapFactory;

import android.net.Uri;

import android.os.Bundle;

import android.support.v7.app.ActionBarActivity;

import android.view.View;

public class MainActivity extends ActionBarActivity {

??? @Override

??? protected void onCreate(Bundle savedInstanceState) {

?????? super.onCreate(savedInstanceState);

?????? setContentView(R.layout.activity_main);

??? }

??? public void click(View view){

?????? NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

?????? Notification notification = new Notification(R.drawable.notification,

?????????? "我是一個(gè)通知", System.currentTimeMillis());

?????? notification.flags = Notification.FLAG_AUTO_CANCEL;

?????? Intent intent = new Intent();

?????? intent.setAction(Intent.ACTION_CALL);

?????? intent.setData(Uri.parse("tel:10086"));

?????? //延期的意圖

?????? PendingIntent contentIntent = PendingIntent.getActivity(this, 0, intent, 0);

?????? //設(shè)置點(diǎn)擊事件的類型

?????? notification.setLatestEventInfo(this, "我是標(biāo)題", "我是內(nèi)容", contentIntent);

?????? nm.notify(0, notification);

??? }

???

??? /**

??? ?* 新版本的notification

??? ?* @param view

??? ?*/

??? @SuppressLint("NewApi")

??? public void click2(View view){

?????? ?Notification noti = new Notification.Builder(this)

???????? .setContentTitle("我是標(biāo)題")? //這些都是Android版本11版本開(kāi)始的

???????? .setContentText("我是內(nèi)容")

???????? .setSmallIcon(R.drawable.notification)

???????? .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher))

???????? .build();

?????? ?NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

?????? ?nm.notify(0, noti);

??? }

}

Android清單文件：

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

??? package="com.itheima.notification"

??? android:versionCode="1"

??? android:versionName="1.0" >

??? <uses-sdk

??????? android:minSdkVersion="8"

??????? android:targetSdkVersion="19" />

??? <uses-permission android:name="android.permission.CALL_PHONE"/>

???

??? <application

??????? android:allowBackup="true"

??????? android:icon="@drawable/ic_launcher"

??????? android:label="@string/app_name"

??????? android:theme="@style/AppTheme" >

??????? <activity

??????????? android:name="com.itheima.notification.MainActivity"

??????????? android:label="@string/app_name" >

??????????? <intent-filter>

??????????????? <action android:name="android.intent.action.MAIN" />

??????????????? <category android:name="android.intent.category.LAUNCHER" />

??????????? </intent-filter>

??????? </activity>

??? </application>

</manifest>

=============================================================================

1????????自殺代碼：殺死進(jìn)程的代碼如下：

package com.itheima.exit;

import android.app.Activity;

import android.app.AlertDialog;

import android.app.AlertDialog.Builder;

import android.content.DialogInterface;

import android.content.DialogInterface.OnClickListener;

import android.os.Bundle;

public class MainActivity extends Activity {

???

??? protected void onCreate(Bundle savedInstanceState) {

?????? super.onCreate(savedInstanceState);

?????? setContentView(R.layout.activity_main);

??? }

???

??? @Override

??? public void onBackPressed() {

?????? AlertDialog.Builder builder = new Builder(this);

?????? builder.setTitle("提醒");

?????? builder.setMessage("確定退出當(dāng)前應(yīng)用程序嗎?");

?????? builder.setPositiveButton("立刻退出", new OnClickListener() {

??????????

?????????? public void onClick(DialogInterface dialog, int which) {

????????????? finish();//關(guān)閉當(dāng)前的activity

????????????? //把自己的進(jìn)程殺死

????????????? //自殺的方法

?????????? ??? android.os.Process.killProcess(android.os.Process.myPid());

?????????? }

?????? });

?????? builder.setNegativeButton("取消", null);

?????? builder.show();

??? }

}

程序退出先的效果（在Devices中的效果）：

退出后：

1 殺死進(jìn)程，場(chǎng)景：殺死空進(jìn)程，后臺(tái)進(jìn)程，他殺(也就是說(shuō)殺不死自己)，界面效果：

程序案例代碼結(jié)構(gòu)如下：

2 編寫activity_main.xml布局文件

<RelativeLayout 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"

??? tools:context=".MainActivity" >

???

??? <EditText

??????? android:hint="請(qǐng)輸入要?dú)⑺赖倪M(jìn)程包名"

??????? android:layout_width="fill_parent"

??????? android:layout_height="wrap_content"

??????? android:id="@+id/et_packname"/>

???

??? <Button

??????? android:onClick="click"

??????? android:layout_width="wrap_content"

??????? android:layout_height="wrap_content"

??????? android:layout_centerHorizontal="true"

??????? android:layout_centerVertical="true"

??????? android:text="殺死進(jìn)程"/>

</RelativeLayout>

3 MainActivity的代碼如下：

package com.itheima.killother;

import android.app.Activity;

import android.app.ActivityManager;

import android.os.Bundle;

import android.view.View;

import android.widget.EditText;

public class MainActivity extends Activity {

??? private ActivityManager am;//相當(dāng)于進(jìn)程管理器

??? private EditText et_packname;

??? protected void onCreate(Bundle savedInstanceState) {

?????? super.onCreate(savedInstanceState);

?????? setContentView(R.layout.activity_main);

??????

?????? //所有程序的開(kāi)啟都是由Activity的ActivityManager來(lái)管理的

?????? am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);

??? ??? et_packname = (EditText) findViewById(R.id.et_packname);

??? }

???

??? public void click(View view) {

?????? String packname = et_packname.getText().toString().trim();

?????? //注意要?dú)⑺绖e的進(jìn)程需要加上權(quán)限

?????? //<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES"/>

?????? //這里中方式只是殺死別人，注意：手機(jī)里面有些進(jìn)程是殺死不掉的，比如電話進(jìn)程

?????? am.killBackgroundProcesses(packname);

??? }

}

程序運(yùn)行結(jié)果：

注意：如果有時(shí)候提示要重啟adb，可以通過(guò)下面的方式：

下面以殺死上面的com.android.music為例：

點(diǎn)擊”殺死進(jìn)程”前：

點(diǎn)擊”殺死進(jìn)程”之后的效果：

總結(jié)

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