打电话主要代码
Activity类：
public void onClick(View v) {
   String str=haoma.getText().toString();
   Intent intent = new Intent();
   intent.setAction("android.intent.action.CALL");
   intent.setData(Uri.parse("tel:"+ str));
   startActivity(intent);
  }
权限：
<uses-permission android:name="android.permission.CALL_PHONE"/>
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发短信主要代码：
Activity类：

public void onClick(View v) {
            String number = numberText.getText().toString();
            String content = contentText.getText().toString();
            SmsManager manager=SmsManager.getDefault();
            ArrayList<String> texts=manager.divideMessage(content);
            for (String texe:texts) {
                manager.sendTextMessage(number, null, content, null, null);
            }
            Toast.makeText(MainActivity.this, R.string.success, Toast.LENGTH_SHORT).show();
        }

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