我正在开发我的第一个Android应用程序，有人可以将多个短信发送到指定的号码。当我将已经编入的消息的数量和数量编入代码时，应用程序运行正常。但是，我创建了一个单独的活动，可以输入目标号码和要发送的消息数量，并通过意图将该数据传回第一个活动。但是现在应用程序在尝试发送消息时崩溃了。
这是第一项活动：
public class TextMessages extends AppCompatActivity {
public static final String DEFAULT = "No Number Found";
private EditText customMessage;
String gotNum;
FloatingActionButton button;
int request_code;
String realnum;
int temp;
int recode;
Button butt;
int number;
String num;
String text;
int x;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_text_messages);
request_code = 1;
FloatingActionButton button = (FloatingActionButton) findViewById(R.id.but);
assert button != null;
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(TextMessages.this,Settings.class);
startActivityForResult(intent, request_code);
Intent a = new Intent(TextMessages.this,Settings.class);
startActivityForResult(a, recode);
}
});
customMessage = (EditText)findViewById(R.id.customMessage);
}
public void onActivityResult(int requestCode, int resultCode, Intent data){
if (requestCode== request_code){
if (resultCode== Activity.RESULT_OK){
num = data.getStringExtra("value");
text = data.getStringExtra("cost");
}
}
}
public void sendText(View view)
{
String message = "";
if (view.getId() == R.id.fab)
{
message = customMessage.getText().toString();
}
else
{
Button sender = (Button)view;
message = sender.getText().toString();
}
//Toast.makeText(this, "Test", Toast.LENGTH_SHORT).show();
int i;
x = Integer.parseInt(text);
for (i = 0; i < x; i++){
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(num, null, message, null, null);
}
}}
正如您所看到的，我已使用String num替换预定数字以及使用int x发送的消息数，这会导致应用程序在按下发送消息的按钮时崩溃。
以下是从以下位置收集要发送的号码和消息的活动：
public class Settings extends AppCompatActivity {
public EditText phoneNum;
public Button apply;
public EditText msgCounter;
public Button save;
int msgCount;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_settings);
phoneNum = (EditText)findViewById(R.id.phoneNum);
msgCounter = (EditText)findViewById(R.id.msgCount);
apply = (Button)findViewById(R.id.butto);
save = (Button)findViewById(R.id.butt);
save.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent pass = new Intent();
pass.putExtra("value", phoneNum.getText().toString());
pass.putExtra("cost",msgCounter.getText().toString());
setResult(Activity.RESULT_OK,pass);
finish();
}
});
}
public void OnButtonClickedApply(View view)
{
String num;
num = phoneNum.getText().toString();
//Toast.makeText(this, num, Toast.LENGTH_SHORT).show();
}
public void saveMsg(View view)
{
msgCount = Integer.parseInt(msgCounter.getText().toString());
}
}
我还可以在将数据输入第二个活动时添加。按下按钮保存数据后，活动重置（重新加载？），我必须再次输入数据，按下按钮后，我会回到第一个活动。
崩溃日志：
06-27 19:14:55.583 2404-2404/com.linfirmware.emergencytext E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.linfirmware.emergencytext, PID: 2404
java.lang.IllegalStateException: Could not execute method for android:onClick
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293)
at android.view.View.performClick(View.java:5198)
at android.view.View$PerformClick.run(View.java:21147)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
at android.view.View.performClick(View.java:5198)
at android.view.View$PerformClick.run(View.java:21147)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.SecurityException: Sending SMS message: uid 10057 does not have android.permission.SEND_SMS.
at android.os.Parcel.readException(Parcel.java:1599)
at android.os.Parcel.readException(Parcel.java:1552)
at com.android.internal.telephony.ISms$Stub$Proxy.sendTextForSubscriber(ISms.java:768)
at android.telephony.SmsManager.sendTextMessageInternal(SmsManager.java:310)
at android.telephony.SmsManager.sendTextMessage(SmsManager.java:293)
at com.example.rahul.customtext.TextMessages.sendText(TextMessages.java:94)
at java.lang.reflect.Method.invoke(Native Method)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
at android.view.View.performClick(View.java:5198)
at android.view.View$PerformClick.run(View.java:21147)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
06-27 19:14:57.765 2404-2404/com.linfirmware.emergencytext I/Process: Sending signal. PID: 2404 SIG: 9
清单文件：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.rahul.customtext">
<uses-permission android:name="android.permission.SEND_SMS" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".TextMessages">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".Settings"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
答案 0 :(得分：0)
如果您使用的是Android M，则可能会关闭SEND_SMS权限。检查在模拟器或设备上的应用程序提供的权限，无论您在何处运行它。