Java 如何以编程方式打开后台运行的应用程序
我有一个运行后台服务的应用程序。当检测到电话呼叫时,我希望该应用程序打开并向我显示特定意图。我该怎么做呢 我的代码是 MainActivity.javaJava 如何以编程方式打开后台运行的应用程序,java,android,Java,Android,我有一个运行后台服务的应用程序。当检测到电话呼叫时,我希望该应用程序打开并向我显示特定意图。我该怎么做呢 我的代码是 MainActivity.java import android.content.Context; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.telephony.PhoneState
import android.content.Context;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import java.lang.reflect.Method;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void startService(View view){
TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
PhoneStateListener phoneStateListener = new PhoneStateListener(){
@Override
public void onCallStateChanged(int state, String incomingNumber) {
String number = incomingNumber;
Log.d("gaandu", number);
if(state == TelephonyManager.CALL_STATE_RINGING){
Toast.makeText(MainActivity.this, "incoming call from" + incomingNumber, Toast.LENGTH_SHORT).show();
}
if(state == TelephonyManager.CALL_STATE_OFFHOOK){
Toast.makeText(MainActivity.this, "Phone is currently in a call", Toast.LENGTH_SHORT).show();
}
if(state == TelephonyManager.CALL_STATE_IDLE){
Toast.makeText(MainActivity.this, "Phone is neither Ringing nor in a Call", Toast.LENGTH_SHORT).show();
}
}
};
telephonyManager.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
}
public void stopService(View view){
Intent i = new Intent(MainActivity.this, MyService.class);
stopService(i);
}
}
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.widget.Toast;
public class MyService extends Service {
@Override
public void onCreate() {
super.onCreate();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Toast.makeText(this, "Service Started", Toast.LENGTH_SHORT).show();
return START_STICKY;
}
@Override
public void onDestroy() {
Toast.makeText(this, "Service Destroyed", Toast.LENGTH_SHORT).show();
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
MyService.java
import android.content.Context;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import java.lang.reflect.Method;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void startService(View view){
TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
PhoneStateListener phoneStateListener = new PhoneStateListener(){
@Override
public void onCallStateChanged(int state, String incomingNumber) {
String number = incomingNumber;
Log.d("gaandu", number);
if(state == TelephonyManager.CALL_STATE_RINGING){
Toast.makeText(MainActivity.this, "incoming call from" + incomingNumber, Toast.LENGTH_SHORT).show();
}
if(state == TelephonyManager.CALL_STATE_OFFHOOK){
Toast.makeText(MainActivity.this, "Phone is currently in a call", Toast.LENGTH_SHORT).show();
}
if(state == TelephonyManager.CALL_STATE_IDLE){
Toast.makeText(MainActivity.this, "Phone is neither Ringing nor in a Call", Toast.LENGTH_SHORT).show();
}
}
};
telephonyManager.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
}
public void stopService(View view){
Intent i = new Intent(MainActivity.this, MyService.class);
stopService(i);
}
}
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.widget.Toast;
public class MyService extends Service {
@Override
public void onCreate() {
super.onCreate();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Toast.makeText(this, "Service Started", Toast.LENGTH_SHORT).show();
return START_STICKY;
}
@Override
public void onDestroy() {
Toast.makeText(this, "Service Destroyed", Toast.LENGTH_SHORT).show();
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.admin.abab">
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".MyService"
android:exported="false"
/>
</application>
</manifest>
在MainActivity.java中,在检测到电话呼叫后,我想启动在后台运行的应用程序,以打开其第一个活动。您可能想查看Android: 你想对来电采取行动,并对来电号码进行处理 解决方案: 这可以通过实现广播接收器和监听TelephonyManager.ACTION\u PHONE\u STATE\u CHANGED ACTION来实现
你可能需要做更多的研究;取决于你的目标Android版本 您可能想看看Android: 你想对来电采取行动,并对来电号码进行处理 解决方案: 这可以通过实现广播接收器和监听TelephonyManager.ACTION\u PHONE\u STATE\u CHANGED ACTION来实现 你可能需要做更多的研究;取决于你的目标Android版本 试试这个。希望这对你有帮助。透明的活动会帮你做些什么 试试这个。希望这对你有帮助。透明的活动会帮你做些什么
当一个电话号码被呼叫时,我已经有了一个动作。我需要的是一个功能,使我能够启动我的应用程序后,它已被销毁或暂停,在通话中,我已经有一个行动时,一个电话号码被调用。我需要的是一个功能,使我能够启动我的应用程序后,已被销毁或暂停,在一个callI不希望祝酒或任何窗口运行在顶部。我希望整个应用程序都能启动。我不希望祝酒词或任何窗口在顶部运行。我希望整个应用程序都能启动。